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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

Select the first letter of the word from the list above to jump to the appropriate section of the glossary. If the term you are looking for starts with a digit or symbol, choose the ‘#’ link.

We also recommend the New Clinical Research Glossary from the Multi-Regional Clinical Trials Center of Brigham and Women’s Hospital and Harvard, which contains creative commons illustrations of widely used terminology.

A

Abdomen
belly
Abdominal
having to do with the belly; pertaining to the body cavity below the diaphragm which contains stomach, intestines, liver, and other organs
Abdominal cavity
space in the belly where the stomach, intestines, kidney, liver, gall bladder, pancreas, spleen, and ureters are found
Abdominocentesis
use of needle or tube to drain fluid from the belly
Abdominoperineal resection
surgery to remove the middle and end of the large intestine
Abdominoplasty
surgery to fix the stomach
Abduction
movement away from the middle of the body
Abortion
the premature end of a pregnancy
Abrasion
area where skin or other tissue is scraped away
Abruptio placentae
premature separation of the placenta from the mother
Abscess
swelling filled with pus
Absorb
take up fluids, take in
Absorption
the way a drug or other substance enters the body
Acapnia
decreased carbon dioxide in the blood
Acetabulum
pocket in the hip bone that holds the top of the upper leg bone
Acidosis
increase of acid in the blood
Acne
pimples
Acoumeter
tool used to measure hearing
Acoustic neuroma
growth in the ear canal
Acquired immunodeficiency syndrome (AIDS)
contagious illness that results in decreased ability of the body to protect itself from other illnesses
Acromegaly
a disease of adults in which the body makes too much growth hormone
Actinic keratosis
skin disease (bumps) caused by extreme overexposure to the sun
Activated partial thromboplastin time
a test of blood clotting time used to measure the ability of the blood to clot
Acuity
clearness, keenness, esp of vision – airways.
Acute
lasting a short time but often causing a serious problem; new, recent, sudden
Addison’s disease
serious disorder in which there is decreased cortisol and aldosterone in the body, resulting in weakness, low blood pressure, and other serious problems
Adduction
movement toward the middle of the body
Adenohypophysis
gland in the brain that makes many hormones that control body functions
Adenoidectomy
surgery to take out the adenoids
Adenoiditis
inflammation of the adenoids
Adenoids
infection-fighting glands in the back of the throat
Adenomyosis
a growth of muscle in the uterus
Adenopathy
swollen lymph nodes (glands)
Adenotome
tool used to remove adenoids
Adhesion
tissue stuck together
Adipose
having to do with fat
Adjuvant
helpful, assisting, aiding
Adjuvant treatment
added treatment
Administer
give
Adrenal gland
a gland found over each kidney
Adrenalectomy
surgery to remove an adrenal gland
Adrenaline
hormone made by the adrenal glands that speeds up body organs and helps the body deal with stress
Adrenalitis
inflammation of one or both adrenal glands
Adrenocortical hormone
any of the hormones made by the outer layer of the adrenal glands
Adrenocorticohyperplasia
increased growth of one or both adrenal glands
Adrenocorticotropic hormone
hormone made by the brain that activates the adrenal glands
Adrenomegaly
increase in size of one or both adrenal glands
Adrenopathy
disease of one or both adrenal glands
Adverse
harmful, bad
Aerosol
drug or substance made as a mist to be breathed in
Afferent
going toward the center area
Afterbirth
material that provides nutrition for the unborn baby and comes out after the baby is born (placenta)
Airway
tube through which air passes to enter and leave the lungs
Alanine aminotransferase (ALT)
substance in blood that is measured to check for liver disease
Albino
white; lacking pigment (lacking color)
Albuminuria
protein in the urine
Alcohol
drug found in whisky, wine, and beer that slows down the central nervous system
Aldosterone
hormone made by the adrenal glands that controls the amount of mineral salts in the body
Allergic reaction
rash, trouble breathing
Allergy
oversensitivity to a substance
Alopecia
baldness
Alpha-fetoprotein
substance in blood that is measured to check for liver cancer, testicular cancer , and spina bifida
ALS
see amyotrophic lateral aclerosis (ALS); see also Lou Gehrig’s Disease (ALS)
Alzheimer’s disease
disorder that causes mental confusion
Ambulate
ability to walk
Amenorrhea
when a woman has no menstrual period
Amniocentesis
removal of some of the waters from around an unborn baby for laboratory testing
Amniochorial
having to do with the tissues that surround the unborn baby
Amniography
x-ray of the uterus (womb) and unborn baby taken after putting a dye into the bag of waters
Amnion
tissue that covers the unborn baby
Amnionitis
inflammation of the amnion
Amniorrhea
leaking of waters from around the unborn baby
Amniorrhexis
breaking of the amnion
Amnioscope
tool inserted through the cervix to look at the amniotic fluid and the unborn baby
Amniotic fluid
waters around the unborn baby
Amniotic sac
bag of tissue that surrounds the unborn baby
Amniotomy
rupture of the membranes (breaking of the tissues around the unborn baby)- done to start labor
Amphetamines
drugs that speed up metabolism and decrease appetite (“speed”)
Amyotrophic lateral sclerosis (ALS)
a disease of the nerves that causes weakness
Anal
having to do with the anus
Analgesic
drug used to control pain
Anaphylactic shock
serious allergic reaction to a substance (e.g., food, drug)
Androgen
male sex hormone
Anemia
decreased number of red blood cells
Anesthesia
loss of sensation or feeling
Anesthetic
drug that is used to produce loss of pain sensation
Anesthetic (general)
a drug or agent used to decrease the feeling of pain or eliminate the feeling of pain by putting you to sleep.
Anesthetic (local)
a drug or agent used to decrease the feeling of pain or by numbing an area of your body, without putting you to sleep.
Aneurysm
area where an artery is swollen like a sack because the wall of the artery is weak
Aneurysmectomy
surgery to take out an aneurysm
Angina pectoris
chest pain due to decreased oxygen being supplied to the heart
Angiocarditis
inflammation of the heart and the blood vessels entering the heart
Angioma
growth made up of blood vessels or lymph vessels
Angioplasty
surgery to open up a narrow blood vessel
Angiorrhaphy
stitching a blood vessel
Angioplasm
cramp in the blood vessels
Angiostenosis
narrowing of the inside of a blood vessel
Angled
bent, not straight
Ankylosing spondylitis
inflammation of the spine causing pain and stiffness
Ankylosis
joint stiffness
Anoplasty
surgery to fix the anus
Anorexia
no appetite for food
Anorexia nervosa
mental disorder in which fear of getting fat results in starvation and weight loss
Anoxia
no oxygen
Antacid
drug used to decrease acid in the stomach (e.g., Tums, Rolaids)
Antecubital
in front of the elbow
Antepartum
before childbirth
Anterior
having to do with the front of the body
Anterior and posterior colporrhaphy
surgery to fix weak muscles in the pelvic area
Anterior lobe
front part of an organ
Anterior lobe of the pituitary
part of the pituitary gland that discharges many hormones
Antianginal
drug used to relieve chest pain
Antiarrhythmic
drug used to resote the natural rhythm of the heart
Antibiotic
drug used to stop or slow down the growth of bacteria and other germs
Antibody
type of protein that helps protect the body against foreign matter, such as bacteria and viruses
Anticoagulant
drug used to stop blood from clotting
Anticonvulsant
drug used to stop seizures
Antidiarrheal
drug used to stop diarrhea
Antidiuretic hormone
hormone made by the pituitary gland that helps the kidneys keep water in the body by decreasing urine formation
Antidote
substance used to treat allergic reactions
Antiemetic
drug used to stop vomiting
Antihistamine
drug used to treat allergic reaction
Antilipidemic
a drug that decreases the level of fat(s) in the blood.
Antimicrobial
regarding a drug that kills bacteria and other germs
Antinauseant
drug used to stop nausea and vomiting
Antipruitic
drug used to stop itching
Antiretroviral
drug that inhibits certain viruses
Antiseptic
substance used to stop or slow down the growth of germs
Antitussive
a drug used to relieve coughing
Antrectomy
surgery to remove the lower part of the stomach
Antrum
lower part of the stomach
Anuria
no urine being made
Anus
ring of muscle that keeps the opening at the end of the digestive tract closed
Aorta
biggest artery in the body
Aortic
stenosis narrowing of the aorta where it comes out of the heart
Aortogram
x-ray of the aorta
Apepsia
without digestion
Aphagia
not able to swollow
Aphasia
not able to speak or write and not able to understand spoken or written words
Apnea
stopping of breathing
Aponeurorrhaphy
stitiching of an aponeurosis
Aponeurosis
strong tissue that joins muscle to bone
Appendectomy
surgery to remove the appendix
Appendicitis
inflammation of the appendix
Appendix
nearly, about
Approximately
nearly, about
Aqueous humor
liquid found in the front of the cavity of the eye
Arachnoid
middle layer of the meninges
Areola
dark-colored skin around the breast nipple
Arrhythmia
uneven heart beat
Arteriogram
x-ray using a dye to outline an artery
Arterioles
small branches of arteries
Arteriorrhexis
breaking of an artery
Arteriorsclerosis
hardening of the artery
Artery
the type of blood vessel that carries blood and oxygen from the heart to the rest of the body
Arthralgia
pain in a joint
Arthritis
inflammation of one or more joints
Arthrocentesis
use of a needle to remove fluid from a joint
Arthroclasia
surgery to free up a joint that it is stiff so it cannot move
Arthrodesia
surgery to fasten a joint so it cannot move
Arthrogram
x-ray of a joint
Arthroplasty
surgery to fix a joint
Arthrosclerosis
stiffening of the joints
Arthroscope
tool used to look into a joint
Arthrotomy
surgery to cut into a joint
Articular cartilage
smooth tissue that covers the bones inside a joint
Artificial insemination
use of a tool to put sperm into the vagina for the purpose of beginning pregnancy
Ascites
fluid in the belly
Aspartate aminotransferase (AST)
substance in blood that is measured to detect liver disease
Aspermia
no sperm
Asphyxia
suffocation
Aspirate
removing a substance using suction
Aspiration
fluid entering lungs
Assay
lab test
Assess
to learn about
Asthma
breathing disorder in which there is a wheezing and difficulty breathing
Astigmatism
flaw in the curve of the eye
Asymptomatic
without symptoms
Ataxia
uncontrolled muscle movement; incoordination
Atelectasis
collapse of a lung
Atherosclerosis
hardening of the arteries
Atraumatic
not damaging to tissue
Atrioventricular
defect hole in the heart present at birth
Atrophy
wasting away, or decrease in size, of a body organ
Audiogram
report of a hearing test
Audiologist
doctor who studies hearing
Audiology
the study of hearing
Audiometer
tool used to measure hearing
Audiometry
measurement of hearing
Aural
having to do with the ear
Auricle
outside flap of the ear
Auscultation
use of a stethoscope to listen to sounds inside the body
Autoimmune disease
disorder in which a person’s immune system attacks parts of his or her own body
Axilla
armpit

B

Bacteria
type of germs
Bacterial
having to do with bacteria
Bacterial analysis
test used to detect and identify bacteria
Bacterial endocarditis
bacterial infection of the inner lining of the heart
Bag of waters
sack containing liquid that surrounds the unborn baby
Balanitis
inflammation of the end of the penis
Balanorrhagia
balanitis with discharge of pus from the end of the penis
Balanorrhea
discharge of fluid from the penis
Barbiturates
group of drugs that are used for different reasons, including general anesthesia, sedation, and stopping seizures
Bartholin’s adentitis
inflammation of the mucus-producing glands in the vagina
Bartholin’s glands
mucus-producing glands in the vagina
Basal cell carcinoma
tumor of the skin (type of skin cancer)
Bayonet
tool that is sharp like a knife
Benign
not cancerous; not malignant, usually without serious consequences, but with some exceptions, eg. benign brain tumor may have, serious consequences
Benign prostatic hypertrophy
increase in size of the prostate gland
Beta blocker
drug used to slow down the heart
Beta-HCG (human chorionic gonadotropin)
substance in blood that is measured to detect cancer of the testicles
Bicupsid valve
a valve in the heart that controls the flow of blood by opening and closing with each heart beat
Bilateral
having to do with both sides of the body
Bile
brown-yellow-green liquid made in the liver and stored in the gallbladder that helps with digestion
Bile duct
tube that carries bile
Bilirubin
a substance found in bile- a high level of bilirubin in the blood causes jaundice
Binding/Bound
carried by, to make stick together, transported
Binocular
having to do with both eyes
Bioavailability
the extent to which a drug or other substance becomes available to the body
Biopsy
removal of tissue so it can be looked at under a microscope
Bleeding time
test to measure how long it takes for a small cut to stop bleeding
Blepharitis
inflammation of the eyelid
Blepharoplasty
surgery to fix the eyelid
Blepharoptosis
drooping of the upper eyelid
Blood
red liquid pumped by the heart
Blood pressure (BP)
the pressure of blood flowing through blood vessels
Blood profile
series of blood tests
Blood urea nitrogen (BUN)
substance in blood that is measured to check kidney function
Blood vessels
tubes that carry blood through the body
Bolus
an amount given all at once
Bone marrow
soft tissue inside bones that makes blood cells
Bone marrow biopsy
use of a needle to remove bone marrow so that it can be looked at under a microscope
Bone marrow transplant
putting normal bone marrow from one person into another person
Bone mass
the amount of [calcium in a give amount of] bone
Bowel
the intestine
Bradyarrhythmia
slow irregular heart beat
Bradycardia
slow heart beat
Bradykinesia
moving slow
Bradypepsia
slow digestion
Brain
main part of the central nervous system
Brain stem
joins the brain to the spinal column
Brand name
commercial name for a drug
Breasts
milk-producing glands of women
Breech birth
when feet, buttocks, or knees come out before head at birth
Bronchi
more than one bronchus
Bronchitis
inflammation of the bronchi
Brochoconstrictor
drug used to make the bronchi tighten up and become narrower
Bronchodilator
drug used to make the bronchi open up and become bigger
Bronchogenic
beginning in the bronchus
Bronchogram
x-ray of the bronchi
Bronchoplasty
surgery to fix the bronchi
Bronchopneumonia
inflammation of the bronchi and lungs
Bronchoscope
tool used to look into the bronchi
Bronchospasm
sudden, uncontrolled narrowing of airways in lungs
Bronchus
tube that carries air from the bronchi
Bulimia
an eating disorder in which a person cannot stop eating and often vomits to make room for more food
Bunion
bone growth inside the base of the big toe
Bursa
small sack filled with liquid that cushions moving parts, such as two bones in a joint
Bursitis
inflammation of the bursa
Bursolith
stone in a bursa
Bursotomy
surgery to cut into a bursa
Bypass
an artificial passageway from one blood vessel to another to get around a blood clot

C

Caffeine
drug found in coffee and colas that speeds up the central nervous system, heart rate, and blood pressure
Calcaneus
heel bone
Calcipenia
low in calcium
Cancellous
bone a type of bone that looks like a sponge
Cancer
abnormal tissue that grows and spreads in the body until it kills
chemotherapy
treatment of cancer using drugs
Cancer radiotherapy
treatment of cancer using x-rays
Cancerous
having to do with cancer
Capillary
tiny blood vessel that connects arterioles to venules
Carbohydrates
type of fuel for the body that includes sugars and starches
Carbuncle
group of boils on the skin
Carcinoembryonic antigen
substance in blood that is measured to detect tumors of stomach or intestines
Carcinogenic
causing cancer
Carcinoma
type of cancer
Cardiac
having to do with the heart
Cardiac arrest
stopping of the heart
Cardiac catheterization
putting a catheter into the heart to test for or treat a heart problem
Cardiac pacemaker
battery-powered tool put under the skin to control the heart rate
Cardiac scan
ultrasonographic test to view the structure of the heart
Cardiac tamponade
squeezing of the heart caused by fluid or blood build-up in the sac around the heart
Cardiodynia
pain in the heart
Cardiogenic
beginning in the heart
Cardiologist
doctor who treats disorders of the heart
Cardiology
study of the heart
Cardiomegaly
disorder of the heart muscle
Cardiomyopathy
disorder of the heart muscle
Cardiopulmonary bypass
artificial passageway through which blood goes around the heart during open-heart surgery
Cardiopulmonary resuscitation (CPR)
giving artificial respiration and heart massage to try to save a person whose breathing or heart has stopped
Cardiotonic
drug used to strengthen the pumping action of the heart
Cardiovalvulitis
inflammation of the heart valves
Cardioversion
use of electric shock to make the heart beat with normal rhythm
Carpal
having to do with the wrist
Carpal bones
wrist bones
Carpal tunnel syndrome
painful disorder caused by a pinch nerve in the wrist
Carpectomy
surgery to remova a wrist bone
Carpoptosis
drooping wrist
Cartilage
a rubbery type of tissue that pads the joints and keeps the shape of the nose and outside ear flaps
Cataract
clouding of the lens of the eye
Cathartic
drug used to stop constipation
Catheter
flexible, tube-like tool used to take fluids out or put fluids into the body
Catheter (indwelling epidural)
a tube placed near the spinal cord used for anesthesia during an operation
Caudal
toward the lower side of an organ or structure
Cecum
the first part of the large intestine, which is shaped like a pouch
Celiotomy
surgery to cut into the abdominal cavity
Cell
the basic building block of all living things
Cell membrane
layer that surrounds a cell
Cellulites
inflammation of connective tissue
Central nervous system (CNS)
the brain and spinal cord
Central nervous system drugs
drugs that speed up or slow down the central nervous system
Cephalagia
headache
Cephalic
related to the head or the head end of the body
Cephalosporin
type of antibiotic
Cerebellitis
inflammation of the cerebellum
Cerebellum
the part of the brain that controls the movement of the muscles and helps maintain balance
Cerebral
having to do with the cerebrum
Cerebral aneurysm
aneurysm in the brain
Cerebral angiography
x-ray of the blood vessels in the brain
Cerebral palsy (CP)
birth disorder of the brain that results in difficulty moving
Cerebral thrombosis
blood clot in the brain
Cerebral trauma
damage to the brain
Cerebrospinal fluid (CSF)
the liquid around and in the brain and spinal cord
Cerebrovascular accident (CVA)
stroke
Cerebrum
largest part of the brain, divided into right and left side
Cerumen
ear wax
Ceruminoma
growth inside the gland that discharges ear wax
Cervical vertebrae
bones of the neck
Cervicectomy
surgery to remove the cervix
Cervicitis
inflammation of the cervix
Cessation
stopping
Chalazion
pimple on the eyelid caused by an inflamed gland
Cheilorrhaphy
surgery to stitch a lip
Chemical name
chemical formula for a drug (generic)
Chemotherapeutic agent
anticancer drug
Chemotherapy
treatment of disease using drugs
Chest cavity
space where the heart, lungs, esophagus, traches, bronchi, and thymus are located
Chiropodist
doctor who treats disorders of the feet
Chiropractor
doctor who treats disorders of the spine and nerves
Chisel
wedge-like tool with a blade that is used for cutting or chipping
Chlamydia
type of germ that usually infects the eyes, lungs, or sex organs
Chloasma
a tumor arising from the skin and other organs
Cholangiogram
x-ray of the gallbladder and bile ducts
Cholangioma
cancer of a bile duct
Cholecystectomy
surgery to remove the gallbladder
Cholecystitis
inflammation of the gallbladder
Choledocholithiasis
gallstonees in a bile duct
Choledocholithotripsy
surgery to crush gallstones in a bile duct
Cholelithiasis
gallstones
Cholinergic
type of nerve or a drug used to change its action
Chondrectomy
surgery to remove cartilage
Chondromalacia
softening of joint cartilage, usually inside the knee
Chorioamnionitis
inflammation of the tissue that covers the unborn baby
Chorion
outside layer of the tissue that covers the unbron baby
Choroids
middle layer of the eyeball
Chromosomes
structures that hold the genes
Chronic
lasting a long time
Chronic obstructive pulmonary disease (COPD)
lung disorder in which the flow of air to the lungs is blocked (e.g., emphysema)
Cicatrix
scar
Circumcision
surgery to remove the foreskin
Cirrhosis
serious liver disorder in which connective tissue replaces normal liver tissue, and liver failure often occurs
Cisplatin
a drug used to kill cancer cells.
Clavicle
collarbone
Cleft lip and palate
birth defect in which there is a split in the lip and the roof of the mouth
Clinical
pertaining to medical care.
Clinical trial
research study
Clinically Significant
of major importance for treating or evaluating patients
Clip
metal fastener used to join or close the edges of a wound
Clitoris
sensitive female sex tissue located above the opening for urination
Coagulation time
measure of how long it takes for blood to clot in a test tube
Coarctation of the aorta
birth disorder in which an area of the aorta is very narrow
Coccyx
tailbone
Cochlea
the organ of hearing inside the ear
Coitus
sexual intercourse between a man and a woman
Colectomy
surgery to remove part or all of the colon
Colonoscope
tool used to look into the colon
Colostomy
an opening, or the surgery to make an opening, between the colon and the outside of the body
Colpitis
inflammation of the vagina
Colporrhaphy
stitching of the vagina
Colposcope
tool with magnifying glass used to look into the vagina and at the cervix
Coma
varying degrees of unconsciousness from which a person may not awaken
Compact bone
hard layers of the bone
Compensation
payment, money
Complete response
total disappearance of disease
Complications
difficulties, problems
Computerized tomography (CT)
x-ray machine that uses a computer to make pictures of the organs of the body; computerized series of x-rays culture test for infection or organisms that could cause infection
Computerized axial tomography (CAT)
x-ray machine that uses a computer to make pictures of the body; computerized series of x-rays culture test for infection or organisms that could cause infection
Conception
the beginning of pregnancy when the fertilized egg implants in the uterus
Concomitant
given at the same time
Concussion
uncnsciousness resulting from a blow to the head affecting the brain
Condom
cover worn over the penis during sexual intercourse to prevent infecion or pregnancy
Congenital
occurring prior to birth, due to parent’s genetic input
Congenital anomaly
birth defect
Congenital heart disease (CHD)
heart disease present at birth
Congestive Heart failure (CHF)
failure of the heart resulting in fluid build-up in the lungs, other body tissues, or both
Conjunctiva
tissue that lines the eyelids and covers part of the eye inside its sockets
Conjunctivitis
inflammation of the conjunctiva; irritation and redness of the thin membrane covering the eye
Connective tissue
type of tissue that connects, supports, touches, and surrounds various body parts
Conscious
awake and aware
Consequences
outcomes, results
Consolidation phase
treatment phase intended to make a remission permanent, follows induction
Constipation
decreased number of or difficulty making bowel movements
Contraindications
medical reasons that prevent a person from using a certain drig or treatment
Controlled trial
study in which the experimental treatment or procedure is compared to a standard (control) treatment or procedure.
Contusion
bruise
Convulsion
seizure
Coombs’ test
blood test to detect antibodies against red blood cells that is used in analyzing blood problems and crossmatching blood for transfusions
Cooperative group
association of multiple institutions to perform clinical trials
Cor pulmonale
heart disease or heart failure caused by a disorder of the lungs
Cornea
clear tissue covering the front part of the eye
Corneoiritis
inflammation of the cornea and iris
Coronary
pertains to the blood vessels that supply the heart
Coronary artery
artery that supplies blood to the heart
Coronary artery byass graft (CABG)
surgery to make a new passgaeway for blood to the heart
Coronary ischemia
not enough blood going to the heart
Coronary thrombosis
blood clot in a coronary artery
Corpus
main portion of a body part or organ
Cortex
outer layer of an organ or other structure in the body
Cortical
having to do with a cortex
Corticotropin
hormone made by the brain that activates the adrenal glands
Cortisol
important hormone made by the adrenal gland that affects metabolism and mineral balance
Costectomy
surgery to remove a rib
Cough
sudden, loud flow if air from the lungs
CPR
see cardiopulmonary resuscitation (CPR)
Cranial
related to the head or top of the body
Cranial cavity
space inside the skull that holds the brain
Cranioplasty
surgery to fix the skull
Craniotomy
surgery on the skull or to make an opening in the skull
Cranium bifidum
birth defect in which there is a crack in the skull
Creatinine clearance test
blood test used to see if the kidneys can effectively remove creatinine from the blood
Cretinism
a birth defect in which lack of thyroid hormone results in stopping of physical and mental development
Crohn’s disease
serious inflammation of any part of the gastrointestinal tract Crossmatch blood test to check if it is safe to give blood transfusion to a person
Croup
children’s breathing disorder resulting in coughing and harsh breathing
Cryoextraction of the lens
surgery using low temperatures to remove a cataract
Cryoretinopexy
surgery of the innermost layer of the eye
Culdocentesis
removal of fluid from the pouch between the vagina and the rectum
Culdoscope
tool used to look into the pouch between the vagina and the rectum
Cumulation
increased action of a drug when given over a period of time
Cumulative
total sum (of individual events, experiences, treatments)
Curt (curette)
spoon shaped tool used for scraping or cutting
Curved
having a curved handle or a curved blade
Cushing’s syndrome
disorder caused by too much of the adrenal hormones or long-time use of cortisone-type drugs in which there are many symptoms, including a fat, round face and weakness
Cutaneous
relating to the skin
Cyanosis
blue color of tissues such as the skin or gums caused by too little oxygen
Cyesiology
the study of pregnancy
Cyesis
pregnancy
Cyst
any closed sac in the body, especially one that contains fluid or semisolid material
Cystectomy
surgery to remove the urinary bladder or gallbladder, also, removal of a cyst
Cystic fibrosis (CF)
genetic disorder of glands resulting in lung and digestive problems
Cystitis
inflammation of the urinary bladder
Cystocele
type of hernia in which the urinary bladder bulges into the vagina
Cystogram
x-ray of the urinary bladder
Cystolith
stone in the urinary bladder
Cystolithotomy
surgery to remove a stone from the urinary bladder
Cystoscope
tool used to look into the urinary bladder
Cystostomy
surgery to make an opening into the urinary bladder
Cystotrachelotomy
surgical cut into the neck of the urinary bladder
Cystoureterogram
x-ray of the urinary bladder and ureters
Cytogenic
making cells
Cytoid
like a cell
Cytology
the study of cells
Cytomegalovirus (CMV)
type of herpes virus
Cytoplasm
material inside a cell

E

Ecchymosis
black and blue mark; bruise
Echocardiogram
picture of the heart in motion made using ultrasonography
Echoencephalography
use of ultrasonography to record the shape of the brain
Eclampsia
convulsions in a pregnant woman caused by high blood pressure and other medical problems
Ectopic pregnancy
pregnancy growing outside the uterus, often in fallopian tubes
Eczema
type of itchy skin rash
Edema
swelling caused by fluid held in the tissues
Efferent
going away from the center of the body
Efficacy
effectiveness
Ejaculation
discharge of semen from the penis during the climax of sexual intercourse
Electrocardiogram (ECG)
picture of the electrical action of the heart
Electrocardiograph
machine that records the electrical action of the heart
Electroencephalogram (EEG)
picture of brain wave activity
Electroencephalograph
machine that records brain wave activity
Electrolyte imbalance
imbalance of salts or chemicals in the blood
Elevator
tool used for lifting tissue
Embolectomy
surgery to remove a blood clot
Embolus
blood clot
Embryo
unborn baby from 2 to 8 weeks after it is formed
Embryoid
looking like an embryo
Embryology
the study of the development of the unborn baby
Emesis
vomiting
Emetic
drug used to make a person vomit; useful in treating poisoning
Emmetropia
normal condition of the eye when light focuses correctly on the retina
Emollient
substance that softens the skin
Emphysema
disorder in which too much air collects deep in the lungs
Empiric
based on experience
Encephalitis
inflammation of the brain
Encephalomyeloradiculitis
inflammation of the brain, the spinal cord, and the spinal nerve roots
Encephalosclerosis
hardening of the brain
Endocervicitis
inflammation of the inner lining of the cervix
Endocrinologist
doctor who treats disorders of the glands that make hormones
Endocrinopathy
disease of the glands that make hormones; hormonal imbalance
Endometriosis
growths outside of the uterus made up of the tissues that lines the uterus
Endometritis
inflammation of the inner lining of the uterus
Endometrium
inner lining of the uterus
Endophthalmitis
inflammation of the contents of the eye
Endorphin
substance made by the body to stop pain
Endoscope
tool used to look into body structures and hollow organs, such as the stomach
Endoscopic examination
examination of an internal part of the body with a lighted tube; looking at a part of the body with a lighted tube.
Endoscopic retrograde cholangiopancreatography (ERCP)
x-ray of the bile and pancreatic ducts made using an endoscope
Endosteum
tissue that lines the inside of bone
Endotracheal
inside the windpipe
Enema
liquid that is injected into the rectum to promote bowel movement
Enteral
by way of the intestines
Enterorrhaphy
surgery to stitch the intestine
Enucleation
surgery to remove the eye
Epidermal
having to do with the outer layer of the skin
Epidermis
outer layer of skin
Epididymis
tubes that stores and carries sperm
Epidural
outside the spinal cord
Epigastric region
area above the navel
Epiglottis
flap of skin that keeps food from going down the windpipe
Epiglottitis
inflammation of the epiglottis
Epilepsy
seizure disorder
Epinephrine
hormone made by the adrenal glands that speeds up body organs and helps the body deal with stress
Epiphysis
growth area of a long bone
Episioperineoplasty
surgery to fix the vulva and perineum
Episiorrhaphy
stitching a tear in the vulva
Episiotomy
surgical cut in the vagina to keep it from tearing when a baby is being born
Epistaxis
nosebleed
Epithelial
having to do with the epithelium
Epithelioma
benign or malignant growth made up of epithelial tissue
Epithelium
type of tissue that covers the outside of the body and makes up the lining and outer layers of most body organs and parts
Equivalent
equal, same
Eradicating
getting rid of (such as a disease)
Erythema
redness
Erythrocyte count
the number of erythrocytes in the blood
Erythrocyte sedimentation rate (ESR)
blood test that measures how long it takes for erythrocytes to sink to the bottom of a tube- used to check for inflammation in the body
Erythrocytes
cells in blood that carry oxygen; red blood cells
Erythrocytosis
increase in number of red blood cells
Erythroderma
red skin
Esophagogastroduodenoscopy
use of an endoscope to look into the esophagus, stomach, and duodenum
Esophagoscope
tool used to look into the esophagus
Estrogen
female sex hormone
Estrogen receptor assay
blood test used to detect tumor cells in patients with breast cancer
Etiology
the cause or causes of an illness
Eupnea
normal breathing
Eustachian tube
tube that connects the middle ear and the throat
Evaluated
assessed; examined for medical condition
Eversion
turning inside out
Excretion
the way that substances leave the body
Exophthalmic
has a bulging eyeball or eyeballs
Exophthalmos
bulging of one or both eyeballs
Exostosis
bony growth on the surface of a bone
Expedited review
rapid review of a protocol by human subjects committee chair without full committee approval, permitted with certain low-risk research
Extension
the straight position of an arm or leg
External
outside the body
External auditory meatus
opening or passageway between the outside of the ear and the eardrum
External ear
outside part of the ear
External genitalia
sex organs on the outside of the body: penis, scrotum, and urethra in men; vulva, clitoris, and urethra in women
Extracorporeal
outside of the body
Extravasation
escape of blood from blood vessels and into tissue

F

Fallopian tube
tube attached to the uterus down which the egg travels from the ovary to the uterus
Fasting blood sugar
blood test used to measure the amount of sugar in the blood after not eating or drinking for a set amount of time
Feces
material excreted during bowel movement
Femoral
having to do with the thigh area
Femoropopliteal bypass
surgery to make a passageway from one artery to another in the leg
Femur
thigh bone
Fetus
unborn baby from 9 weeks after it is formed until it is born
Fibrillation
fast uncontrolled heart beat; irregular beat of the heart or other muscle
Fibroid tumor
growth made up of fibrous tissue
Fibrous
having many fibers, such as scar tissue
Fibula
the lower leg bone behind the shin
Fimbria
tissue that looks like a fringe on the end of the uterine tubes
Fine
having thin jaws or tips, such as a tool used for delicate or small procedures
Fissure
crack or groove in tissue
Flatus
passing gas
Flexion
bent position of the arm or leg
Fluorescent treponemal antibody absorption (FTA-ABS) test
blood test used to detect syphilis
Food and Drug Administration (FDA)
government agency that regulates foods and drugs
Forceps
tool with two blades and a handle used for handling tissue or dressings
Foreskin
fold of skin that covers the penis and is removed in circumcision
Fracture
broken bone
Fulguration
use of electric sparks to remove tissue such as tumors
Fundus
top of the uterus; or back of the eye
Fungal
having to do with fungi
Fungal test
test used to detect and identify a fungus
Fungi
more than one fungus
Fungus
type of living organisms, such as yeasts, molds, and mushrooms, some of which cause infection and some of which look like plants
Furuncle
painful skin boil

G

Gait
the way a person walks
Galactorrhea
too much discharge of milk from the breast
Gallbladder
small sack under the liver that holds bile
Gamma globulin
type of protein that helps the body fight infection
Ganglion
group of nerve cells found outside the central nervous system; or a benign tumor on muscle connective tissue or on a tendon
Ganglionectomy
surgery to remove a ganglion
Ganglionitis
inflammation of a ganglion
Gangrene
death of tissue caused by loss of blood flow and usually followed by infection
Gastrectomy
surgery to remove all or part of the stomach
Gastric lavage
washing the stomach out
Gastric ulcer
sore in the stomach
Gastritis
inflammation of the stomach
Gastriodynia
pain in the stomach
Gastroenteritis
inflammation of the stomach and intestines
Gastroscope
tool used to look into the stomach
Gastrostomy
surgery to make an opening from the outside of the body into the stomach
Gavage
feeding a person through a tube that goes into the stomach
General anesthesia
physical state of unconsciousness and loss of pain sensation caused by anesthetic drugs
Generic name
chemical name for a drug
Genes
material passed from parent to child that determines the make-up of the body and mind
Genetic
having to do with the genes
Genital
having to do with the sex organs
Genital herpes
disease caused by a herpesvirus in which there are blisters on the genitalia
Genitalia
male and female sex organs
Gestational
pertaining to pregnancy
Gingival
the gums
Gingivectomy
surgery to remove gum tissue
Gingivitis
inflammation of the gums
Gland
tissue that produces a material, such as the saliva or a hormone
Glans penis
end of the penis
Glaucoma
increased pressure inside the eye that causes visual problems
Globulins
proteins in the blood
Glomerulonephritis
inflammation of the kidney
Glomerulus
place in the kidney where urine is formed
Glossitis
inflammation of the tongue
Glossopathy
disease of the tongue
Glossorrhaphy
surgery to stitch the tongue
Glucocorticoids
drugs or natural substances made by the adrenal glands that have many effects on body metabolism, raise sugar level in the blood, and reduce inflammation
Glucose
type of sugar found in the blood
Glucose tolerance test
test that measures blood sugar levels over a certain amount of time in a patient after he drinks a beverage that contains a measured amount of sugar
Glycosuria
sugar in urine
Gonad
sex gland: female ovary or male testicle
Gonorrhea
type of bacterial infection in the sex organs and sometimes in the skin and joints
Gout
disorder in which crystals of uric acid deposit in and around joints, causing pain and arthritis
Granulocytopenia
drop in white blood cell count
Growth hormone (GH)
hormone made by the pituitary gland that controls the growth of the body
Guaiac test
test for blood in stool
Gynecologist
doctor who treat disorders of the sex organs of women
Gynecology
the study of the reproductive system of women

H

Hair
thin strands of protein that grow up from the hair follicles
Heart
muscle that moves or pumps blood through the body
Heart failure
when the heart inadequately pumps blood through the body
Heart murmur
swishing sound, heard when listening to the heart through a stethoscope, caused by abnormal flow of blood through the heart
Hematemesis
blood in vomit
Hematocrit
the percentage of blood made up of red blood cells
Hematocytopenia
not enough blood cells
Hematologist
doctor who treats blood disorders
Hematology
the study of blood
Hematoma
pocket of blood caused by bleeding from a broken blood vessel; a bruise; appears “black and blue”
Hematopoiesis
the making of blood cells
Hematosalpinx
blood in the uterine tube
Hematuria
blood in the urine
Hemiparesis
muscle weakness or partial paralysis, usually with loss of feeling, on half of the body
Hemiplegia
total loss of muscle movement, usually with loss of feeling, on half of the body
Hemodialysis
method used to remove waste material from the blood
Hemodynamic
related to blood flow
Hemoglobin (Hgb)
substance that carries oxygen and gives blood its red color
Hemolysis
bursting open of red blood cells
Hemophilia
genetic defect in which blood clots too slowly
Hemorrhage
bleeding, escape of blood from blood vessels
Hemorrhoidectomy
surgery to remove hemorrhoids
Hemorrhoids
twisted and bulging veins in the rectal area
Hemostasis
the stopping of bleeding
Hemothorax
blood in the chest cavity
Heparin lock
needle placed in the arm with blood thinner to keep the blood from clotting inside the needle or tubing
Hepatitis
inflammation of the liver
Hepatoma
growth on the liver
Heritable disease
a disease which can be transmitted to one’s offspring resulting in damage to future children
Hernia
bulging of an organ through an abnormal opening in a muscle wall
Herniated disk
breaking of a ring-shaped pad in the spine, which often pinches a nerve; slipped disk
Herniorrhaphy
surgery to fix a hernia
Herpes
groups of tiny blisters found on the skin caused by infection with a herpesvirus
Heterosexual
person who is attracted to the opposite sex
Hiccup
sudden, uncontrolled spasm of the diaphragm
Hidradenitis
inflammation of a sweat gland
Hip bone
bone at the lower part of the body trunk
Hirsutism
abnormal hairiness (in women, an adult male pattern of hair distribution
Histology
the study of tissue under the microscope
Histopathologic
pertaining to the disease status of body tissues or cells
Hodgkin’s disease
a cancer of white blood cells
Holter monitor
a portable machine for recording heart beats
Homosexual
person who is attracted to the same sex
Hordeolum
infection of the oil glands of the eyelids; stye
Hormone
substance made by a gland in the body that regulates another part of the body
Hospital formulary
list of drugs and their proper doses maintained by each hospital
Humeral
having to do with the upper arm bone
Humerus
upper arm bone
Hydrocephalus
increase in fluid in usually causing pressure on the brain; water on the brain
Hydronephrosis
abnormal collection of urine in the kidney causing a swollen kidney
Hydrosalpinx
fluid in the uterine tube
Hymen
fold of tissue at the opening of the vagina
Hymenectomy
surgery to remove the hymen
Hypercalcemia
too much calcium in the blood
Hypercapnia
too much carbon dioxide in the blood
Hyperesthesia
very sensitive to touch
Hyperglycemia
too much sugar in the blood
Hyperkalemia
too much potassium in the blood
Hyperkinesis
overactive movements
Hypernatremia
high blood sodium level
Hyperopia
farsightedness
Hyperplasia
abnormal increase in the number of normal cells
Hypertension
high blood pressure
Hypertensive heart disease
heart problems caused by high blood pressure
Hyperthyroidism
overactive thyroid gland
Hyperventilation
breathing that is too fast
Hypnotic
drug used to make a person sleep
Hypocalcemia
not enough calcium in the blood
Hypocapnia
not enough carbon dioxide on the blood
Hypochondriac region
area to the right or left above the naval
Hypodermic
under the skin
Hypodermic injection
injection of a substance under the skin
Hypoesthesia
state of having less than normal sensitivity to stimulation
Hypogastric region
area below the naval
Hypoglycemia
not enough sugar in the blood
Hypokalemia
not enough potassium in the blood
Hyponatrenia
low blood sodium level
Hyponea
weak, slow breathing
Hypospadias
birth defect in which the urethra opens under the penis instead of the tip of the penis
Hypotension
low blood pressure
Hypothermia
low body temperature
Hypothyroidism
underactive thyroid gland
Hypotonia
decreased muscle tone
Hypoventilation
too little air entering the lungs
Hypoxemia
not enough oxygen in the blood
Hypoxia
not enough oxygen in the tissues
Hysteratresia
birth defect in which the uterus does not open to the outside of the body
Hysterectomy
surgery to remove the uterus
Hysteropexy
surgery to fasten down the uterus in its normal position
Hysterosalpingo-oophorectomy
surgery to remove all of the internal female reproductive organs
Hysterosalpingography
taking an x-ray of the uterus and the uterine tubes using a dye to outline them
Hysteroscope
tool used to look into the uterus

I

Iatrology
the science of medicine
Iatrogenic
caused by a physician or by treatment
Icterus
too much bile in the blood causing a yellow color to the skin, gums, eye, and other tissues
Idiopathic
of unknown cause
Idiosyncrasy
rare side effect of a drug; unusual reaction of a person to a drug
Ileocecal
having to do with the ileum and the cecum
Ileum
third and last part of the small intestine
Ileus
blockage of the intestines
Iliac regions
areas to the right and left below the naval
Iliofemoral
having to do with the hip and thigh bones
Ilium
wing-shaped upper part of the hip bone
Immune globulins
proteins that help protect the body from infection and foreign matter
Immune system
the cells and substances that protect the body from infection and foreign matter
Immunity
protection against infection
Immunodeficiency
weakness of the immune system
Immunosuppressive
drug which suppresses the body’s immune response used in transplantation and diseases caused by disordered immunity
Immunotherapy
giving of drugs to help the body’s immune (protective) system; usually used to destroy cancer cells
Impaired function
abnormal function
Impedance plethysmography
test used to find blood clots
Impetigo
skin infection
Implanted
placed in the body
Impotent
not able to have or to keep an erection during sexual intercourse
Incontinence
not able to control bladder or bowel actions
Induction phase
beginning phase or stage of a treatment
Induration
hard spot; hardening
Indwelling
remaining in a given location, such as a catheter
Infarct
death of tissue because of lack of blood supply
Infectious disease
disease which is transmitted from one person to next
Inferior
toward the lower part of the body
Inflammation
swelling, redness, and pain in tissues caused by injury or damage
Influenza
the flu
Infusion
placing a liquid substance into a vein by letting it flow in with gravity
Ingestion
eating; taking by mouth
Inhalant
substance given through the nose or mouth to reach the lungs
Insulin
the hormone that controls blood sugar levels
Interferon
agent which acts against viruses; antiviral agent
Interictal
happening between seizures
Intermittent
occurring (regularly or irregularly) between two time points; alternately ceasing and beginning
Intermittent claudication
pain and weakness in the legs when walking is impossible and then goes away after a rest
Internal
within the body
Interior
inside of the body
Intervertebral disks
pads found between each ring (bone) in the spine
Intracavity injection
injection of a substance into a body cavity
Intracoronary thrombolytic therapy
injection of medicine to dissolve a blood clot in an artery of the heart
Intracranial
inside the skull
Intradermally
given into the skin
Intradermal injection
injection of a substance into the skin
Intradermal tests
allergy tests performed by injecting allergy-causing substances underneath the skin to see if they cause a reaction
Intramuscular
into the muscle; within the muscle
Intramuscular injection (IM)
injection of a substance into a muscle (e.g., upper arm pr backside)
Intraocular
within the eye
Intraperitoneal
into the abdominal cavity
Intrathecal injection
injection of a substance into the space surrounding the spinal cord (i.e., spinal canal)
Intravenous (IV) injection
injection of a substance into a vein
Intravenous pyelogram
x-ray of the kidneys and ureters using dye that is injected into the blood
Intravesical
in the bladder
Intubate
the placement of a tube into the airway
Intussusception
telescoping of the intestine into itself
Invasive procedure
puncture, opening or cutting of the skin
Inversion
turning inward
Investigation
study
Investigational device exemption (IDE)
the license to test an unapproved new medical device
Investigational method
a treatment method which has not been proven to be beneficial or has not been accepted as standard care
Investigational new drug (IND)
the license to test an unapproved new drug
Iritis
inflammation of the iris
Irritable bowel syndrome
bowel disorder in which there is pain and diarrhea or constipation
Ischemia
localized tissue anemia due to obstruction of the inflow of arterial blood
Ischium
lower part of the pelvic bone, part you sit on
Islets of Langerhans
tissue in the pancreas that makes and discharges insulin and other hormones
Isthmus
thin strip of tissue that joins two parts of the body

J

Jaundice
too much bile in the blood causing a yellow color to the skin, gums, eye, and other tissues
Jejunum
second and longest part of the small intestine

K

Kaposi’s sarcoma
purple or brown cancerous pimples on the skin, often associated with AIDS
Karyocyte
cell with a center
Karyoplasms
material inside the center of a cell
Keloid
type of scar tissue that keeps growing inside
Keratin
protein that is found in the hair, nails, and skin
Keratoplasty
surgery to fix the cornea
Ketone bodies
substances that increase in the blood and urine when too much body fat and too many carbohydrates are being broken down, usually because of starvation or serious, untreated diabetes mellitus
Kidney
one of two organs in the lower back that filter blood and make urine
Knife
tool with a sharp blade used for cutting tissue
Kyphosis
hunchback

L

Labyrinth
structure in the inner ear
Labyrinthectomy
surgery to remove the inner ear
Labyrinthitis
inflammation of the inner ear
Laceration
torn, ragged cut
Lacrimal
having to do with the tears
Lacrimal duct
passageway in the eyelids that drains tears; a type of tear duct
Lactating
making milk
Lactic dehydrogenase (LDH)
substance measured in a blood test to assess damage to heart and other organs
Lactogenic
causing the making of breast milk
Lactorrhea
too much discharge of milk from the breast
Laminectomy
surgery to remove the top of vertebra
Laparoscope
tool used to look into the abdominal cavity
Laparotomy
surgery to make an opening into the wall of the belly to look inside with a laparoscope
Large intestine
the bowel between the small intestine and the anus, including the cecum, colon, and rectum
Laryngeal
having to do with the voice box
Laryngectomy
surgery to remove the voice box
Laryngitis
inflammation of the voice box
Laryngocentesis
surgery to puncture the voice box
Laryngoplasty
surgery to fix the voice box
Laryngoscope
tool used to look into the voice box
Laryngospasm
sudden, uncontrolled cramp in the voice box
Laryngostomy
surgery to make an opening into the voice box
Laryngotracheobronchitis
inflammation of the larynx, windpipe, and bronchi; croup
Larynx
voice box
Laser angioblast
using a laser light to open blocked arteries
Lateral
toward or having to do with the side of the body
Latex agglutination test
blood test used to detect antibodies
Laxative
drug used to stop constipation
LE (lupus erythematosus)-cell test
blood test used to detect the presence of a certain type of white blood cell seen in people with lupus erythematosus and similar disorders
Legionnaires’ disease
serious disorder caused by bacterial infection in which there is high fever, stomach pain, headache, and pneumonia
Leiodermia
disorder in which the skin is too smooth and shiny
Leiomyoma
smooth muscle growth
Leiomyosarcoma
cancer of smooth muscle
Lens
structure in the eye that is normally clear and helps to focus light coming into the eye
Lesion
abnormal area of tissue, such as a wound, sore, rash, or boil
Lethargy
sleepiness
Leukemia
cancer of white blood cells
Leukocoria
white pupil
Leukocyte
one of the infection-fighting cells in the blood and body tissues; white blood cells
Leukocyte count
number of white blood cells in the blood
Leukocytosis
increase in number of white blood cells in the blood
Leukoderma
white skin
Leukokoria
white pupil
Leukopenia
low white blood cell count
Libido
sexual desire
Ligament
elastic tissue that connects bone or cartilage
Lipid
fat
Lipid tests
blood tests that measure how much fat is in the blood
Lipoid
fatty
Lipoma
growth made up of fat cells
Lipoprotein electrophoresis
blood test that measures the amounts of fat and protein in the blood
Lithotripsy
surgery or other method to crush a stone
Liver
large organ that helps in many body functions, including digestion, metabolism, and storage of substances
Lobar pneumonia
bacterial infection of one or more sections of the lung
Lobectomy
surgery to remove a section of the lung
Local anesthesia
creation of insensitivity to pain in a small local area of the body
Localized
restricted to one area; limited to one area (of the body)
Lochia
normal discharge from the vagina for 1 to 2 weeks after childbirth
Long bone
bone that is long and slender, such as a leg or arm bone
Lordosis
forward curving of the spine, causing saddle back or swayback
Lou Gehrig’s Disease (ALS)
muscle disorder
Lower GI (gastrointestinal) series
x-ray using a dye given as an enema to outline the large intestine
Lumbar puncture
spinal tap using a needle to remove spinal fluid for testing from the lowerback
Lumbar region
lower back of the body
Lumbar vertebrae
bones of the spine in the lower back
Lumen
the space inside a tube-like body structure, such as a blood vessel
Lung lobe
one of five sections of the two lungs
Lungs
the two main organs for breathing
Lupus erythematosus (LE)
chronic disorders of connective tissue in which there can be skin rash, arthritis, kidney problems, and anemia, among other problems
Lymph
clear liquid tissue
Lymph node
tissue that filters disease germs from the blood; also called a lymph gland
Lymphadenitis
inflammation of the lymph nodes
Lymphadenography
x-ray of the lymph nodes
Lymphangiography
an x-ray of the lymph nodes or tissues after injection of dye in lymph vessels (e g in feet)
Lymphocyte
type of white blood cell important in the body’s defense against infection
Lymphoid tissue
tissue that contains lymphocytes
Lymphoma
cancerous growth made up of lymphoid tissue, particularly lymphocytes

M

Macro-
describes something that is large or long
Macule
flat, colored spot on the skin
Magnetic resonance imagining (MRI)
the use of magnetic waves to look at soft tissues of the body
Malaise
a vague feeling of bodily discomfort, feeling bad
Malfunction
condition in which something is not functioning properly
Malignant
cancerous
Mallet
hammer-like tool used for striking objects
Mammary glands
milk-producing tissue in the breasts
Mammary papilla
breast nipple
Mammogram
x-ray of the breast
Mammoplasty
surgery to reconstruct the breast
Mandible
lower jaw bone
Mantoux test
skin test used to check for tuberculosis
Mastalgia
pain in the breast
Mastectomy
surgery to remove a breast
Mastitis
inflammation of the mammary gland or of the breast
Mastoid cells
air spaces inside the mastoid process
Mastoid process
protruding part of a bone located in the skull behind the ear
Mastoidectomy
surgery to remove the mastoid process or mastoid cells
Mastoiditis
inflammation of the air spaces in the mastoid process that communicate with the middle ear
Mastoidotomy
surgery to cut into the mastoid process
Mastoptosis
drooping breasts
Maxilla
upper jaw bone
Maxillectomy
surgery to remove the upper jaw bone
Maxillitis
inflammation of the upper jaw bone
Meconium
first stool of the newborn
Medial
toward or having to do with the middle of the body
Medications
medicines, drugs
Mediastinum
tissue and organs in the middle of the chest between the two lungs
Medulla oblongata
part of the brain that controls breathing, blood pressure, and otherimportant body functions; brain stem
Medulloblastoma
type of brain tumor
Meibomian cyst
pimple on the eyelid caused by an inflamed gland (stye)
Melanin
material that makes the color of the skin and hair
Melanoma
cancerous black growth on the skin
Melasma
a blotchy brown stain on the skin, usually over the cheeks, forehead, or neck; often associated with pregnancy, menopause, or the use of oral contraceptives
Menarche
time in life when a girl starts having a menstrual period
Meniere’s disease
disorder of the inner ear in which there is dizziness, ringing in the ears, and loss of hearing
Meninges
three-layered tissue that covers the brain and spinal cord
Meningitis
inflammation of the meninges
Meningocele
bulging of the meninges through a hole in bone
Meningomyeloradiculitis
inflammation of the meninges and roots of the spinal nerves
Meniscectomy
surgery to remove a meniscus
Meniscitis
inflammation of the meninges and roots of the spinal nerves
Meniscus
one of two crescent-shaped pads inside the knee joint
Menometrorrhagia
too much bleeding from the uterus during menstruation and at other times
Menopause
time in life when a woman stops having a menstrual period
Menses
discharge of blood and tissue from the uterus that happens about every 4 weeks in women who are not pregnant
Menstrual
having to do with menstruation
Menstrual period
the time of menstruation
Menstruation
discharge of blood and tissue from the uterus that happens about every 4 weeks in women who are not pregnant
Metabolism
total of all the important actions in the body that keep it alive
Metabolize
process of breaking down substances in the cells
Metacarpal bones
bones of the hand between the wrist and fingers
Metastasis
spread of disease from one place in the body to another place in the body that is not nearby
Matatarsal bones
foot bones
Metronidazole
a drug used to treat infections caused by parasites or other causes of anaerobic infections
Metrorrhea
discharge from the uterus
Micro-
describes something that is small or delicate
Microcephalus
person with a very small head
Micturate
urinate
Middle ear
the space between the eardrum and the inner ear
Migraine
type of severe headache that occurs periodically and is often associated with nausea, vomiting, and constipation or diarrhea
Minimal
slight
Minimize
reduce
Miotic
substance that makes the pupil of the eye smaller (e.g., narcotic)
Miscarriage
loss of an unborn baby from the uterus before it is able to survive outside the mother’s body
Mitral commissurotomy
surgery to repair the mitral valve to enlarge the opening between the two parts of the left side of the heart
Mitral valve
valve between two chambers on the left side of the heart
Mobility
ease of movement; ability to move around
Molecular pharmacology
the study of the action between two parts of the left side of the heart
Monitor
check on; keep track of; watch carefully
Monoparesis
weak muscle movement and loss of feeling in one arm or one leg
Monoplegia
loss of movement and loss of feeling in one arm or one leg
Morbidity
undesired result or complication; serious disease
Mortality
death or death rate
Motility
ability to move
Mouth
opening through which food passes into the body to be digested
Mucopurulent
slimy and with pus in it
Mucosa, mucous membrane
moist lining of digestive, respiratory, reproductive, and urinary tracts
Mucus
slimy fluid
Multigravida
women who has been pregnant two or more times
Multipara
woman who has given birth two or more times
Multiple sclerosis (MS)
slowly worsening disorder of the central nervous system that causes weakness, incoordination, numbness, and probh talking and seeing
Muscle
type of tissue that causes movement
Muscular dystrophy (MD)
genetic problem resulting in muscle weakness and atrophy
Myalgia
muscles aches
Myasthenia
muscle weakness
Myasthenia gravis
disorder that causes muscles to get tired quickly
Mydriatic
substance that makes the pupil of the eye bigger
Myelogram
x-ray of the spinal cord using dye that is injected into the spinal area
Myeloma
cancer of the types of cells normally found in bone marrow
Myelomalacia
softening of the spinal cord
Myocardial
pertaining to the (muscle of the) heart
Myocardial infarction (MI)
heart attack; death of heart muscle
Myocardial ischemia
not enough blood going to the heart
Myocarditis
inflammation of the heart muscle
Myocardium
muscle of the heart
Myoma
growth made up of muscle tissue
Myomectomy
surgery to remove a myoma or a piece of muscle
Myometritis
inflammation of the muscle of the uterus
Myometrium
muscle of the uterus
Myopathy
muscle disorder
Myopia
nearsightedness
Myoplasty
surgery to fix a muscle
Myorrhaphy
surgery to stitch a muscle
Myringitis
inflammation of the eardrum
Myringoplasty
surgery to fix a ruptured eardrum
Myxedema
disorder caused by lack of thyroid hormone in which areas of the skin are swollen

N

Nail
tough plate of tissue covering the top of the end of each finger and toe
Narcotic
strong habit-forming drug that stops pain and depresses the central nervous system
Nasal
having to do with the nose
Nasal septum
wall that divides the nose into two sides
Nasogastric tube
tube that goes through the nose and into the stomach; used for feeding liquid food to a patient
Nasolacrimal duct
tube that drains tears from the eye into the nose; tear duct
Nasopharyngeal
having to do with the nasopharynx
Nasopharyngitis
inflammation of the nasopharynx
Natal
having to do with childbirth
Nausea
sick to the stomach
Nebulizer
device used to turn liquids into mists for breathing treatments
Necrosis
death of tissue or skin
Neonate
newborn infant
Neonatology
the study of disorders of newborn infants
Neoplasm
new growth that is not normal; tumor
Nephrectomy
surgery to remove a kidney
Nephritis
kidney inflammation
Nephroblastoma
type of malignant kidney tumor
Nephrogram
x-ray of the kidney
Nephrohypertrophy
overgrowth of the kidney
Nephrolithiasis
stones in the kidney
Nephroma
growth in the kidney
Nephromegaly
overgrowth of the kidney
Nephropexy
surgery to tie down a kidney
Nephroptosis
sagging kidney
Nephrosonography
use of ultrasonography
Nerve
string-like tissue that carries messages to and away from the brain and spinal cord and tells muscles to move
Nervous tissue
type of tissue that makes up the central nervous system and nerves
Neuralgia
nerve pain
Neurectomy
surgery to remove part of a nerve
Neuritis
inflammation of a nerve
Neuroarthropathy
disorder of the joints and the central nervous system or nerves
Neuroblast
cell that will develop into a nerve
Neuroblastoma
a cancer of nerve tissue
Neurohypophysis
part of the brain that discharges hormones including oxytocin and vasopressin
Neuroid
like a nerve
Neurological
pertaining to the nervous system
Neurologist
doctor who treats disorders of the central nervous system and nerves
Neurolysis
surgery to open the covering of a nerve to destroy a nerve
Neuroma
growth made up of nerve tissue
Neuropathy
a disturbance in the function of the brain or spinal cord that may affect the nerves and muscles of the body
Neuropharmacologic drug
drug that acts on the nervous system
Neuroplasty
surgery to fix a nerve
Neurorrhaphy
stitching a cut nerve
Neurosis
mental and emotional disorder
Neurotomy
surgery to make a break in a nerve
Neutropenia
decrease in the main part of the white blood cells
Nevus
mole; birthmark
Nocturia
too much urination at night
Non-Invasive
not breaking, cutting or entering the skin
Norepinephrine
hormone discharged from nerves, the brain, and the adrenal glands that helps the body deal with stress and low blood pressure
Nosocomial pneumonia
pneumonia acquired in the hospital
Nucleus
center of a cell
Nulligravida
woman that has never given birth
Nullipara
woman that has never given birth to an infant that lived
Nyctalopia
difficulty seeing at night

O

Obstetrician
doctor who takes care of pregnant women and delivers babies
Obstetrics
the study of pregnant women and childbirth
Obstructive sleep apnea
breathing problems while sleeping because the airways collapse or get closed off
Occlude
close off
Oculmycosis
fungus infection in the eye
Oculus dexter (OD)
right eye
Oculus sinister (OS)
left eye
Oculus uterque (OU)
each eye
Oligomenorrhea
occasional and irregular menstruation that occurs every 35 days to 6 months
Oligospermia
deceased amount of sperm in semen
Oliguria
decreased amount of urine
Omphalitis
inflammation of the belly button
Omphalocele
a birth defect in which there is bulging of the intestine through the body wall in the belly button region
Oncogenic
causing tumors to form
Oncologist
doctor who treats cancer
Oncology
the study of tumors or cancer
Onychectomy
surgery to remove a nail
Onychocryptosis
ingrown nail
Onychomalacia
softening of the nails
Onychomycosis
fungal infection of the nail
Onychophagia
nail biting
Oophorectomy
surgery to remove the uterus and ovaries
Oophoritis
inflammation of the ovary
Oophorohysterectomy
surgery to remove the uterus and ovaries
Opportunity
chance
Opthalmagia
pain in the eye
Ophthalmic
having to do with the eye
Opthalmologist
doctor who treats eye disorders
Ophthalmology
the study of eye disorders
Opthalmopathy
disorder of the eye
Opthalmorrhagia
bleeding from the eye
Optic
having to do with the eye
Optic nerve
nerve that carries visual messages from the retina to the brain
Optician
person who makes glasses
Optimal
best, most favorable or desirable
Optometer
tool used in eye examinations
Optometry
the study of the eye and vision
Oral
having to do with the mouth
Oral administration
giving a drug by mouth
Orchidopexy
surgery to tie down a testicle in the scrotum
Orchiectomy
surgery to remove one or both testicles
Orchiepididymitis
inflammation of a testicle and epididymis
Orchiopexy
surgery to tie down a testicle in the scrotum
Orchioplasty
surgery to fix a testicle
Orchitis
inflammation of a testicle
Organ
two or more kinds of tissues that work together to make up a part of the body with a unique function
Orgasm
the climax of sexual excitement
Orthodontist
dentist who treats teeth and jaw disorders
Orthopedics
the study of the bones and joints
Orthopedist
doctor who treats bone and joint disorders
Orthopnea
difficult breathing except when sitting up
Orthotist
person who puts on and teaches the use braces and splints
Ossicles
bones of the middle ear that carry sound
Osteoarthritis (OA)
disorder, which is seen mostly in older persons, in which the joints become painful and stuff
Osteoblasts
cell that makes bone
Osteocarcinoma
bone cancer growth
Osteochondritis
inflammation of bone and cartilage
Osteoclasis
surgery to break a bone
Osteocyte
bone cell
Osteofibroma
benign tumor of bone and connective tissue
Osteogenesis imperfecta
genetic disorder in which the bones are delicate and break easily
Osteomalacia
soft bones
Osteomyelitis
infection and inflammation of bone
Osteonecrosis
death of bone tissue
Osteopetrosis
rare bone disorder characterized by dense bone
Osteoplasty
surgery to fix a bone
Osteoporosis
loss of calcium from bone tissue resulting in bones that break easily; prevalent in postmenopausal women
Osteosarcoma
cancer of bone
Osteotome
chisel-like tool used for cutting or marking bone
Otalgia
earache
Otitis
inflammation of the ear
Otitis externa
inflammation of the outer ear canal
Otitis interna
inflammation of the inner ear
Otitis media
inflammation of the middle ear
Otologist
doctor who treats disorders of the ear
Otology
the study of the ear
Otomastoiditis
inflammation of the ear together with mastoiditis
Otomycosis
fungus infection in the outer ear canal
Otopyorrhea
discharge of pus from the ear
Otorhinolaryngologist
doctor who treats disorders of the ear, nose, and throat
Otosclerosis
bone deposits in the inner ear
Otoscope
tool used to look into the ear
Ovaries
female sex glands; female organs which release eggs
Ovulation
discharge of an egg from the ovary
Ovum
the female sex cell that joins with the male sperm to make a zygote and eventually a baby; egg
Oximeter
tool used to measure the amount of oxygen in the blood
Oxytocin
hormone made by the brain that makes the uterus cramp and milk come out of the breasts

P

Pachyderma
thickening of the skin
Palate
roof of the mouth
Palatitis
inflammation of the roof of the mouth
Palatoplasty
surgery to fix the roof of the mouth
Pallor
pale color of the skin
Palmar
having to do with the palm of the hand
Pancreas
organ that makes hormones, including insulin, and digestive juices
Pancreatic
having to do with the pancreas
Pancreatitis
inflammation of the pancreas
Panplegia
total loss of muscle control and feeling
Pansinusitus
inflammation of the all the sinuses on one side of the body
Pap test
microscope test used to detect virus infection of the cervix or cancer of the vagina, cervix, or lining of the uterus
Papule
pimple
Para
woman who has given birth
Paralysis
loss of ability to move muscles with loss of feeling also
Paranasal sinuses
air cavities inside the bones of the face around the nose
Paraplegia
complete loss of muscle control and total loss of feeling from the waist downward
Parasympatholytic
drug that blocks a kind of nerve
Parasympathomimetic
drug that imitates the action of a kind of nerve
Parathyroid gland
gland that makes and discharges a hormone that helps control the amount of calcium in the blood
Parathyroidectomy
surgery to remove the parathyroid gland
Parathyroidoma
growth or cancer on the parathyroid gland
Parenteral administration
giving a substance by injection rather than by mouth
Paresis
muscle weakness; partial paralysis
Parietal layer
layer of tissue in the wall of a cavity
Parietal layer of the pericardium
layer of tissue in the sack around the heart
Parkinson’s disease
disorder of the central nervous system, seen usually in older persons, in which there is muscle weakness, trembling, sweating
Paronychia
inflammation around the nail
Paroxysm
sudden worsening of an illness; or a spasm or seizure
Partial thromboplastin time (PTT)
a test of blood clotting time used to measure substances that help the blood to clot
Participate
take part
Parturition
childbirth
Patch test
allergy test performed by putting an allergy-causing material on the skin to see if it causes a reaction
Patella
kneecap
Patellectomy
surgery to remove the kneecap
Patency
condition of being open
Patent
open
Pathogenic
causing disease
Pathogenesis
the initial cause of a disease
Pathologist
doctor who studies the changes in the body and its tissues caused by disease
Pathology
the study of the changes in the body and body tissue caused by disease
Pediculosis
infection with lice, which are tiny bugs
Pelvic bone
hip bone
Pelvic cavity
space where the urinary bladder, certain reproductive organs, part of the large intestine, and the rectum are found
Pelvic inflammatory disease (PID)
infection of any of the female reproductive organs inside the pelvic space, including the uterus, uterine tubes, and ovaries
Pelvimetry
x-ray of the pelvis of the mother to make sure her pelvis is large enough for the body to come through during birth
Pelvis of the kidney
place where urine leaves the kidney
Penicillin
type of antibiotic
Penile implant
artificial device put into the penis to help a man get an erection
Penis
outer male sex organ
Peptic ulcer
sore in the stomach or in the lining of the stomach
Percussion
tapping of a body surface with the fingers to check the organs under the skin by the sound that is made
Percutaneous
through the skin
Percutaneous perforation
through the skin puncture, tear or hole
Percutaneous transluminal coronary angioplasty (PTCA)
procedure in which a small balloon is blown up inside the blood vessel to open up a blood vessel
Pericardiotomy
surgery to make an opening into the pericardium
Pericarditis
inflammation of the pericardium
Pericardium
two-layer sack of tissue around the heart
Perimetritis
inflammation of the perimetrium
Perimetrium
outer layer of tissue around the uterus
Perineorrhaphy
stitching a tear in the perineum
Perineum
area between the vulva and rectum in women and between the scrotum and rectum in men
Periosteum
layer of tissue that covers bone
Peripheral
not central
Pertussis
whooping cough
Petechia
tiny red or purple spot on skin or other tissue caused by bleeding
Phacoemulsification
method of removing a cataract by using sound waves to break it up
Phalanges
finger and toe bones
Pharmacist
person licensed to prepare and dispense drugs and fill prescriptions
Pharmacodynamics
the study of how drugs act on the body
Pharmacokinetics
the study of the way a drug enters and leaves the blood and tissues over time; study of the way the body absorbs, distributes and gets rid of a drug
Pharyngitis
sore throat
Pharynx
area between the mouth and esophagus that performs the swallowing action; throat
Phase I
initial study of a new drug in humans to determine limits of tolerance
Phase II
second phase of study of a new drug intended to obtain initial information
Phase III
large scale trial to confirm and expand information on safety and usefulness of a new drug
Phenothiazines
group of drugs used for the control of mental illness
Phenylketonuria (PKU)
dangerous build-up of toxic materials in the body resulting from a genetic defect that affects metabolism
Phlebitis
irritation or inflammation of a vein
Phlectomy
surgery to remove part or all of a vein
Phlebography
x-ray of a vein or veins using a dye to outline them
Phlebotomy
nicking or putting a needle into a vein to remove blood
Phonocardiogram
detailed record of heart sounds
Photophobia
irritation of the eye caused by light
Photoretinitis
inflammation of the back of the eye caused by strong light
Phrenic
having to do with the mind; or having to do with a diaphragm
Phrenopathy
mental disorder
Pia mater
inner layer of the meninges
Pinna
outer flap of the ear
Pituitary gland
gland that sits under the brain and makes many hormones, including some that control other glands
Placebo
a pretend treatment (with no drug in it) that is compared in a clinical trial with a drug to test if the drug has a real effect
Placebo effect
symptom or change of condition seen when a placebo is given; not attributable to an active drug agent
Placenta
tissues that provide food for the unborn baby
Plantar
having to do with the sole of the foot
Plasma
liquid part of blood where cells float
Plasmapheresis
removing plasma from blood that has been drawn from a person
Platelet count
the number of platelets in the blood
Platelets
small structures in blood that help it to clot
Pleura
thin tissue that covers the lungs and inner walls of the chest
Pleural effusion
fluid in the chest cavity
Pleurisy
inflammation of the pleura with discharge in the chest cavity, making breathing painful
Pleuropexy
surgery to fix the film that covers the lungs
Pneumatocele
bulging of the lungs through an abnormal opening
Pneumobronchotomy
incision into the lungs
Pneumoconiosis
dust in the lungs
Pneumocystis carinii
type of parasite or fungus that causes pneumonia in infants and weakened patients, such as those with AIDS
Pneumonectomy
surgery to remove a lung
Pneumonia
inflammation of the lungs in which the lungs become heavy
Pneumonitis
inflammation of the lungs
Pneumothorax
free air in the chest cavity
Podiatrist
foot doctor
Poliomyelitis
infection with a virus in which there can be fever, headache, and stiff neck followed by paralysis and wasting away of muscles
Polyarteritis
inflammation of many arteries
Polycystic kidney
kidney with many cysts in it
Polydipsia
too much thirst
Polymyositis
inflammation of more than one muscle
Polyneuritis
inflammation of several nerves
Polyp
type of growth that sticks up out of tissue
Polypectomy
surgery to remove a polyp
Polyuria
too much urine being made
Pons
part of the brain through which the two sides and different areas of the brain communicate
Porphyria
disturbance of metabolism that can be seen as disorders of the skin or other organs
Posterior
having to do with the back of the body
Posterior lobe of the pituitary
part of the pituitary gland that discharges oxytocin, vasopressin, and some proteins
Postictal
happening after a seizure
Postpartum
after childbirth
Potential
possible
Potentiation
increase in drug action from using two drugs together instead of using each drug alone
Potentiator
an agent that helps another agent work better
Preeclampsia
serious problem of pregnancy in which there is high blood pressure and excess fluid in the tissues of the mother
Pregnancy
carrying an unborn baby
Preictal
happening before a seizure
Premature infant
infant born before it has fully developed; weight less than 5.5 lbs
Prenatal
before birth
Prepuce
fold of skin (foreskin) that covers the penis and is removed in circumcision
Presbycusis
loss of hearing because of old age
Presbyopia
problems with vision because of old age
Primigravida
woman going through her first pregnancy
Primipara
woman who has had one pregnancy that lasted at least 20 weeks
Proctologist
doctor who treats disorders of the rectum and anus
Proctology
the study of the disorders of the rectum and anus
Proctoptosis
fallenanus protruding from the body
Proctoscope
tool used to look into the rectum
Progestins
type of female hormones that prepare the uterus for pregnancy
Prognosis
forecast of the probable outcome of a disease
Prolapsed uterus
fallen uterus protruding from the body
Prone
lying face down
Prophylaxis
a drug given to prevent disease or infection
Prospective study
study following patients forward in time
Prostate gland
gland that makes fluid that aids movement of sperm
Prostate-specific antigen (PSA)
substance in blood that is measured to check for prostatic cancer
Prostatectomy
surgery to remove all or part of the prostate gland
Prostatic cancer
cancer of the prostate gland
Prostatitis
inflammation of the prostate gland
Prostatocystitis
inflammation of the neck of the bladder and the bladder
Prostatolith
stone in the prostate gland
Prostatorrhea
discharge of liquid from the prostate
Prosthesis
artificial body part
Prothrombin time (PT)
a test of blood clotting time used to measure substances that help the blood to clot
Protocol
plan of study
Proximal
nearest; closer to the center of the body, away from the end
Pruritus
itchiness
Pseudocyesis
false pregnancy
Psoriasis
scaly skin rash
Psychiatry
the study of mental disorders
Psychogenic
caused by the mind (rather than the body)
Psychologist
doctor who treats disorders of the mind, thoughts, and behavior
Psychology
the study of mental action and behavior
Psychopathy
any disorder of the mind
Psychosis
severe mental disorder; craziness
Psychosomatic
having a connection between the mind and physical symptoms
Pterygium
unusual fold of film on the eye
Puberty
years when the sex organs mature
Puerperal
a woman who has just given birth to an infant
Puerperal
right after childbirth
Puerperium
the first 3 to 6 weeks after childbirth
Pulmonary
having to do with the lungs
Pulmonary edema
fluid in the lungs
Pulmonary embolism
blood clot in the lungs
Pulmonary neoplasm
lung tumor
Pupil
black spot in the middle of the eye, which is the opening in the center of the iris
Pupillometer
tool that measures how wide the pupil is
Purgative
drug used to cause the bowels to empty
Purified protein derivative (PPD)
substance used in tuberculosis skin test
Purpura
small purple-red marks in skin or other tissue caused by bleeding
Pustule
pimple filled with pus
Pyelitis
inflammation of the kidney and its pelvis
Pyelogram
x-ray of the kidney and ureters
Pyelolithotomy
surgery to remove a kidney stone
Pyelonephritis
inflammation of the kidney and its pelvis
Pyeloplasty
surgery to fix the pelvis of the kidney
Pyelostomy
surgery to make an opening into the pelvis of the kidney
Pyloric sphincter
ring of muscles between the stomach and the small intestine
Pyloromyotomy
surgery to cut muscles of a pyloric sphincter that is too narrow
Pyloroplasty
surgery to fix the pyloric sphincter
Pylorus
the opening of the stomach into the small intestine
Pyosalpinx
pus in the uterine tubes
Pyuria
pus in the urine

Q

Quadriplegia
loss of muscle movement and loss of feeling in both arms and legs

R

Rachiotomy
surgery to cut into a bone or bones of the spine
Rachischisis
birth defect in which there is a groove in the spine
Radial keratotomy
surgery to fix nearsightedness
Radiation therapy
x-ray or cobalt treatment
Radiculitis
inflammation of a spinal nerve root
Radioimmunoassay (RIA)
laboratory method to measure a substance, such as a hormone
Radius
one of the two lower arm bones
Random
by chance
Randomization
assignment of treatment group by chance, similar to tossing a coin (when there are two treatment choices)
Recombinant
formation of new combinations of genes
Reconstitution
putting back together the original parts or elements
Rectal administration
giving a substance by putting it into the rectum
Rectocele
bulging of the rectum into the vagina
Rectouterine pouch
pouch in the area between the uterus and the rectum
Recur
happen again
Red blood cell (RBC)
a cell in blood that carries oxygen
Red blood cell count
the number of red blood cells in the blood
Red blood cell morphology
the size and shape of individual red blood cells as seen under a microscope
Refractory
not responding to treatment
Regeneration
regrowth of a structure or of lost tissue
Regimen
pattern of administering treatment
Relapse
the return or reappearance of a disease.
Remission
condition that occurs when signs of an illness are decreased or gone
Renal
having to do with the kidney
Renal biopsy
removing a piece of kidney tissue to look at it under a microscope
Renal calculi
kidney stones
Renal pelvis
place where urine leaves the kidney
Renal transplant
kidney transplant
Renogram
x-ray to check kidney function by measuring how fast a dye passes through the kidneys and to the urinary bladder
Replicable
capable of being duplicated
Reproduction
making babies
Reproductive
having to do with reproduction
Resect
remove or cut out (surgically)
Resectoscope
tool used to remove or biopsy tissue from the urinary bladder, prostate, or urethra
Retina
innermost layer of the eye
Retinal
having to do with the retina
Retinal photocoagulation
use of a laser light to treat disorders of the retina or tumors in the eye
Retinitis pigmentosa
eye disorder in which the retina atrophies and vision gradually worsens
Retinoblastoma
cancer in the eye growing off of the retina
Retractor
tool used for holding back tissue
Retrograde pyelogram
x-ray of the kidney and ureter made by injecting dye backward into the ureter
Retrospective study
study looking back over past experience
Reye’s syndrome
serious disorder of children, which often occurs after a viral infection, affecting the brain, liver, and other body organs
Rhabdomyoma
benign tumor of a muscle
Rhadomyosarcoma
cancer of a muscle
Rheumatic fever
bacterial disease in which there is fever and inflammation of the heart, blood vessels, and joints
Rheumatic heart disease
damage to the heart caused by rheumatic fever, especially deformed heart valves
Rheumatoid factor
substance in blood that is measured to check for rheumatoid arthritis
Rhinitis
inflammation of the nose
Rhinomycosis
fungus infection in the nose
Rhinoplasty
surgery to fix the nose
Rhinorrhagia
nosebleed
Rhinorrhea
runny nose
Rhizotomy
surgery to cut apart a nerve root
Rhytidectomy
surgery to remove wrinkles
Rhytidoplasty
surgery to remove wrinkles from the face
Rongeur
tool used for cutting hard tissue, such as bone

S

Sacrum
large triangle-shaped bone at the bottom of the spine just above the tailbone
Sagittal plane
divides the body into a right and left side
Saliva
liquid in the mouth that helps with swallowing food; spit
Salivary glands
glands that make saliva
Salpingectomy
surgery to remove the uterine tube
Salpingitis
inflammation of the uterine tubes
Salpingo-oophorectomy
surgery to remove an ovary and uterine tube
Salpingocele
uterine tube bulging out of an abnormal opening
Salpingocyesis
pregnancy growing in the uterine tube
Salpingostomy
surgery to make an openig into or to open a blockage of a uterine tube
Salphinx
tube down which the egg travels from the ovary to the uterus
Sarcoma
cancer of connective tissue cells
Saw
tool with a notched blade used for cutting
Scabies
itchy skin infection by a microscopic bug called a mite; mange
Scapule
shoulder blade
Schick test
skin test used to detect diphtheria
Sciatica
pain running down from the lower back to the buttocks to the back or side of the leg
Scissors
tool with two sharp blades used for cutting tissue
Sclera
outer protective layer of the eye; “whites of the eyes”
Scleral buckling
surgery to fix a detached retina
Scleroderma
hardening and thickening of the skin
Sclerokeratitis
inflammation of the sclera and the cornea
Scleromalacia
softening of the sclera seen in patients with rheumatoid arthritis
Sclerotomy
surgery to cut into the sclera
Scoliosis
S-shaped (side-to-side) curve of the spine
Scratch test
allergy test performed by putting a small amount of allergy-causing material on small skin patches to see if it causes a reaction
Scrotum
pouch that holds the testicles
Sebaceous gland
gland that discharges oil into the skin
Seborrhea
very oily skin
Sedation
calmness
Sedative
drug used to relax a person without making the person sleepy
Seizure
sudden, uncontrolled muscle spasms and loss of consciousness resulting from abnormal brain function
Self-retaining
stays in place without being held
Semen
fluid containing, sperm, which is discharged from the penis during the climax of sexual intercourse
Semen analysis
test used to count and examine the sperm cells
Semicircular canals
channels in the labyrinth of the ear
Semilunar valves
valves that control the flow of blood out of the heart by opening and closing with each heart beat
Seminoma
a type of testes cancer
Septoplasty
surgery to fix the wall inside the nose
Septotomy
incision into the wall inside the nose
Sequentially
in a row
Serrations
small grooves in the edges or tips of tools that help to hold tissue
Serum
clear liquid part of blood
Serum bilirubin
blood test used to detect liver disorder
Serum calcium
blood test used to find out how much calcium is in the blood
Serum creatine kinase
blood test used to measure creatine
Serum enzyme test
blood test used to detect the presence of certain chemicals discharges into the blood from dying heart muscle
Serum phosphorus
blood test used to measure the amount of phosphorus present
Serum test
blood test used to measure the amount of endocrine material in the blood
Sexually transmitted disease (STD)
disorder spread by sexual contact
Sharp
with an edge or tip that cuts
Shingles
painful, fluid-filled blisters caused by herpesvirus infection
Shunt
artificial or natural channel running between two other channels
Sialolith
stone in a salivary gland or duct
Sickle cell anemia
genetic defect of hemoglobin causing red blood cells to change shape; symptoms include pain in the joints and belly, and ulcers on the legs
Side effect
an effect of a drug that is not related to the reason the drug is used
Sigmoid colon
the lower part of the colon just before the rectum
Sigmoidoscope
tool used to look into the sigmoid colon
Single-blind trial
test or experiment in which the person giving treatment, but not the patient, knows which treatment the patient is receiving
Sinusotomy
incision into the sinus
Sleep apnea
breathing problems while sleeping
Slipped disk
bulging out of a pad between bones of the spine, which often causes pinched nerve roots
Small intestine
the bowel between the stomach and the large intestine, including the duodenum, jejunum, and ileum
Smooth
without teeth or grooves; not rough
Snare
tool with a wire loop used for removing tissue growth
Software
computer program
Somatic
having to do with the body
Somatogenic
caused by the body (rather than the mind)
Somatopathy
disorder of the body as opposed to the mind
Somnolence
sleepiness
Spasm
a muscle contraction that produces pain and interferes with use of the muscle
Specific gravity
test used to measure the amount of solid material and minerals in a liquid, such as the urine
Speculum
tools used to stretch and hold open an opening into a body channel, such as the nose or vagina
Sperm
the male sex cell that joins with a female egg to make a zygote and eventually a baby
Sphygmocardiograph
tool used to record arterial blood pressure
Sphygmomanometer
tool for measuring blood pressure
Spina bifida
birth defect in which the spine does not develop fully and close up
Spinal cavity
space inside the spinal column where the spinal cord is found
Spinal cord
the cord of nerve cells and nerve fibers running down the spine that helps guide messages to and from the brain
Spirometer
tool used to measure the amount of air going into and out of the lungs during breathing
Spleen
largest lymph organ in the body
Splenectomy
surgery to remove the spleen
Splenomegaly
enlarged spleen
Splenopexy
surgery to tie down the spleen
Spondylosyndesis
fusion of the spine
Sputum
fluid and material brought up from the lungs and windpipe and spit out through the mouth
Squamous cell carcinoma
cancer that usually occurs on the skin or in the lungs
Staging
a determination of the extent of the disease
Standard of Care
treatment plan which the majority of the medical community would accept as appropriate
Staphylococcus
type of bacteria
Stenosis
narrowing of a channel
Stereotactic breast biopsy
biopsy of breast tissue taken by using a three-dimensional body map to locate the tissue
Sterilization
the killing of all living germs; or a process to make a man or woman not able to have children
Sternoclavicular
having to do with the breastbone and the collarbone
Sternoid
like the breastbone
Sternum
breastbone
Stethoscope
tool used to listen to the sounds made by the heart, lungs, intestines, and other organs
Stimulant
drug used to speed up the central nervous system
Stomach
the first part of the intestines that holds food for digestion after it is swallowed
Stomatitis
inflammation inside the mouth that sometimes occurs as an allergic reaction; can also result from infection or virus
Stomatogastric
the mouth and stomach
Stool
bowel movement; feces
Stool culture
test for bacteria in stool
Strabismus
abnormal position of the eye, as in wall eye or crossed eyes
Stratify
arrange in groups for analysis of results (e g , Stratify by age, sex, etc)
Streptococcus
type of bacteria
Streptomycin
type of antibiotic
Stricture
area where a tube in the body is too narrow
Stupor
stunned state in which it is difficult to get a response or the attention of the subject
Stye
pimple on the eyelid
Subclavian
under the collarbone
Subcostal
below the ribs
Subcutaneous (SC)
under the skin
Subdural
below the outer layer of the meninges
Sublingual
under the tongue
Sublingual administration
giving a substance by placing it under the tongue (not to be swallowed) (e.g., nitroglycerin)
Submandibular
below the lower jaw
Submaxillary
below the upper jaw
Subscapular
below the shoulder blade
Sulfonamide
type of antibiotic
Superficial
close to the outside of the body
Superior
toward the top of the body
Supine
lying on the back
Supportive care
general medical care aimed at symptoms, not intended to improve or cure underlying disease
Suppository
drug that is given by putting it into the rectum, vagina, or urethra
Suprarenal
above the kidney; or having to do with the adrenal gland
Suprascapular
above the shoulder blade
Sweat glands
structures in and under the skin that makes sweat
Swimmer’s ear
inflammation of the outer ear canal
Sympatholytic
drug used to slow down the action of certain types of nerves
Sympathomimetic
drug used to speed up heart rate, raise blood pressure, and open up air passages
Symphysis
type of joint where two bones meet but there is no movement
Symptomatic
having symptoms
Syncope
fainting spell
Syndrome
a condition characterized by a set of symptoms
Synergism
combined action of two drugs used together that is better than using each drug alone
Synoviosarcoma
cancer of the joint
Syphilis
bacterial infection spread by sexual contact
System
having to do with the whole body
Systemic lupus erythematosus (SLE)
chronic disorder of connective tissue in which there can be skin rash, arthritis, kidney problems, and anemia, among other problems
Systole
the time when the heart contracts to pump blood to the body
Systolic
top number in blood pressure; pertaining to contraction phase of heart beat

T

T-lymphocytes
type of white blood cells involved in immune reactions
Tachypnea
fast breathing
Tarsal bones
ankle bones
Tarsectomy
surgery to remove one or more of the ankle bones
Tendonitis
inflammation of tendons
Tendon
elastic band that attaches muscle at each end
Tenodynia
pain in a tendon
Tenomyoplasty
surgery to stitch together a ripped tendon
Tenorrhaphy
surgery to fix a tendon and muscle
Tenosynovitis
inflammation of covering layer around a tendon
Tenotomy
surgery to cut tendon of an eye muscle to fix strabismus
Teratogenic
capable of causing malformations in unborn fetuses
Testicle
one of two male sex glands that make sperm
Testicular carcinoma
cancer of the testicles
Testis
one of two male sex glands that make sperm
Tetany
muscle cramps caused by a low amount of calcium
Tetracycline
type of antibiotic
Tetraplegia
total loss of muscle movement and loss of feeling in both arms and legs
Thoracalgia
pain in the chest or wall of the chest
Thoracentesis
using a needle to remove fluid from the chest cavity
Thoracic cavity
space where the heart, lungs, esophagus, tracheas, bronchi, and thymus are found
Thoracic vertebrae
bones of the spine in back of the chest
Thoracoscope
tool used to look into the chest cavity
Thoracotomy
surgery to cut into the chest
Thorax
the chest
Throat
area between the mouth and esophagus that performs the swallowing action
Thrombosis
blood clotting within blood vessels
Thrombus
a clotting of blood factors that frequently blocks blood flow
Thymectomy
surgery to remove the thymus
Thymoma
tumor of the thymus
Thymus
lymph organ in the chest, which is most active at puberty, where a type of lymphocyte is made
Thyroid gland
gland in the neck that makes the thyroid hormones, which are important in controlling metabolism
Thyroid-stimulating hormone(TSH)
hormone that makes the thyroid gland active
Thyroidectomy
surgery to remove the thyroid gland
Thyroparathyroidectomy
surgery to remove the thyroid and parathyroid glands
Thyrotoxicosis
disorder caused by too much thyroid hormone
Tibia
the larger of the two lower leg bones; the shin bone
Tinea
fungal infection of skin; ringworm
Tinnitus
ringing, roaring, buzzing, or clicking noises in the ears
Tissue
group of cells that work together
Titration
gradual alteration of drug dose to determine desired effect or most beneficial strength of drug
Tolerance
decrease in response to a fixed dosage of drug; over time, higher and higher doses of a drug are needed to get desired effect
Tonometer
tool that measures pressure inside the eye
Tonsil
lymphoid tissue in the back of the mouth
Tonsillectomy
surgery to remove a tonsil or tonsils
Topical anesthetic
applied to certain area of the skin to reduce pain to specific (limited) area to which applied
Topical application
giving a medication by putting it directly on the skin
Toxicity
any harmful effect of a drug or poison
Trabeculectomy
surgery that makes a place for fluid to drain from the eye, reducing eye pressure in patients with glaucoma
Trachea
windpipe
Tracheitis
inflammation of the windpipe
Tracheocystitis
inflammation of the neck of the urinary bladder
Tracheoplasty
surgery to fix the windpipe
Tracheostomy
surgery to make a hole through the neck from the windpipe to the outside of the body
Tranquilizer
drug used to control anxiety
Transdermal
through the skin
Transdermal patch
patch containing a drug that is put on the skin so the drug will enter the body through the skin
Transient ischemic attack (TIA)
sudden loss of blood flow to the brain that lasts for a few minutes to an hour but has no lasting effect
Transiently
temporarily
Transrectal ultrasound
ultrasonography of the organs in the belly done using a probe in the rectum
Transverse plane
divides the body to make a top and bottom
Trauma
injury; wound
Traumatic
causing damage, like a toll used to crush tissue
Treadmill
stress test test used to determine heart function
Trichomoniasis
parasite infection that is spread by sexual contact
Trichomycosis
fungus infection in the hair
Tricupsid
valve a valve in the heart that controls the flow of blood by opening and closing with each heart beat
Tubal ligation
surgery to close the uterine tubes to prevent pregnancy
Tuberculin
substance used in skin tests to test for tuberculosis
Tuberculosis
bacterial infection that usually results in a serious lung disorder
Tympanic membrane
eardrum
Tympanitis
inflammation of the ear drum
Tympanometer
tool used to fix the ear drum
Tympanoplasty
surgery to fix the eardrum and bones of the middle ear

U

Ulcer
sore
Ulcerative colitis
sores in the colon
Ulna
one of the two lower arm bones
Ultrasonography
making a picture of internal organs by bouncing sound waves off them and recording the echoes
Ultrasound
making a picture of internal organs by bouncing sound waves off them and recording the echoes
Umbilical region
area around the naval
Umbilicus
navel; belly button
Unconscious
not awake and not aware; knocked out
Ungula
having to do with the nails
Unilateral
having to do with only one side of a structure
Upper GI (gastrointestinal) series
x-ray using a dye to show the upper part of the digestive system
Upper respiratory infection (URI)
a cold or flu
Uptake
absorption and incorporation of a substance by living tissue; absorb and incorporate a substance, taking in of a substance by living tissue
Uremia
build-up of poisons in the blood, usually because of kidney failure
Ureter
tube that carries urine from a kidney to the urinary bladder
Ureterectomy
surgery to remove all or part of a ureter
Ureteritis
inflammation of the ureter
Ureterocele
bulging of a ureter taken after putting a dye in it to outline it
Ureterogram
x-ray of a ureter taken after putting a dye in it to outline it
Ureterolithiasis
stones in the ureter
Ureterostenosis
narrow area in a ureter
Ureterostomy
surgery to make an opening into a ureter
Ureterotomy
surgery to cut into a ureter
Urethra
tube that carries urine from the urinary bladder to the outside of the body
Urethritis
inflammation of the urethra
Urethrocystitis
inflammation of the urethra
Urethrometer
tool used to measure the urethra
Urethropexy
surgery to tie down the urethra
Urethroplasty
surgery to fix the urethra
Urethrostomy
surgery to make an opening from the urethra to the outside of the body
Uric acid test
blood test used to measure the amount of uric acid in the blood
Urinal
container that holds urine
Urinalysis
series of tests done on urine
Urinary
having to do with urine
Urinary bladder
sack that holds urine before it leaves the body
Urinary catheterization
passing a tube into the urinary bladder to remove urine
Urinary retention
abnormal holding of urine
Urinary suppression
not able to discharge urine
Urinary tract
all the structures that make and pass urine, including the kidneys, ureters, urinary bladder, and urethra
Urinary tract infection (UTI)
infection of the urinary system
Urination
the act of passing urine
Urine
pale yellow liquid waste material and sediment
Urine casts and crystals
urine test to check mineral levels and sediment in the urine and to check for infection or inflammation in the urinary tract
Urine color
normal color for urine is straw yellow
Urine pH
urine test to find out the chemical make-up of urine (acidity)
Urine protein
urine test used to measure how much protein is in the urine
Urinometer
tool used to measure the specific gravity of urine
Urodynamics
the force and flow of urine
Urologist
doctor who treats disorders of the urinary tract of men and women and the genital tract of men
Urticaria
hives
Uterine tube
tube down which the egg travels from the ovary to the uterus
Uterus
organ where the unborn baby develops and grows
Uvula
v-shaped tissue that hangs from the roof of the back of the mouth
Uvulectomy
surgery to remove the uvula
Uvulitis
inflammation of the uvula

V

Vagina
tube that connects the uterus to the outside of the body
Vaginitis
inflammation of the vagina
Vaginodynia
pain in the vagina
Vaginoperineorrhgaphy
surgery to fix tears in the vagina and vaginal areas
Vaginoplasty
surgery to fix the vagina
Vagotomy
surgery to cut the vagus nerve or nerves, usually done to slow down the making of stomach acid
Valvuloplasty
plastic repair of a valve, especially of the heart
Varicose veins
twisted and bulging veins that are larger than normal
Vas deferens
tube that carries sperm out of the testicle
Vasectomy
surgery to cut out part or all of the ductus deferens-done to make a man not able produce children
Vasoconstrictor
drug used to make blood vessels tighten up and become narrower
Vasodilator
drug used to make blood vessels open up and become bigger
Vasospasm
narrowing of blood vessels due to spasm of vessel walls
Vasovasostomy
surgery to undo a vasectomy by connecting up the ductus deferens again-done to make a man able to produce children again
VDRL
test blood test used to detect syphilis
Vector
a carrier, usually an insect, that carries and transmits disease-causing microorganisms
Vein
the type of blood vessel that carries blood back to the heart from the rest of the body
Vein ligation and stripping
surgery to remove twisted (varicose) veins in the legs
Vena cava
largest vein in the body
Venipuncture
putting a needle into a vein
Venogram
x-ray of a vein
Ventilator
machine used to help a person breathe
Ventral
toward or having to do with the front of the body
Ventricle
small space, such as one of several that hold spinal fluid inside the brain and the two lower chambers of the heart
Venule
little vein
Verruca
wart
Vertebra
one of the 33 bones in the spine
Vertebral column
the spine
Vertebrocostal
having to do with a vertebra and a rib
Vertical transmission
spread of disease
Vertigo
light-headedness; dizziness
Vesicle
blister
Vesicourethral
having to do with the urethra and the bladder
Vesicovaginal fistula
abnormal opening between the bladder and vagina
Viral
having to do with a virus
Virus
tiny type of gene
Visceral
having to do with the internal organs
Vitreous body
jelly-like liquid found in the back chamber of the eye
Void
urinate
Volvulus
twisting of the intestines causing a blockage
Vomit
matter discharged from the stomach out of the mouth
Vulva
the tissues around the opening to the vagina
Vulvectomy
surgery to remove the vulva
Vulvovaginal
having to do with the vagina and vulva
Vulvovaginitis
inflammation of the vagina and vulva