Glossary of Terms

This glossary of terms is meant to help everyone understand medical words. It is a place to quickly find information on medical words.

To find a word or term begin by clicking on a letter in the A-Z list. Then you can browse down the list to find the word you want. You can also type your medical word in the search box in the upper right corner and then click on the little magnifying glass.

This glossary is for information only. It should never be used instead of advice from a healthcare provider.

If you have questions or comments about the Glossary of Terms please let us know.

If there is a word you couldn't find or you have a suggestion, please send an email to @email

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dander

flakes of skin, cradle cap

debilitate

weaken, make worse

debride, debridement

to remove skin and other dead or infected tissue. This helps clean up a wound so it can heal faster

 

deceased

dead, passes away, died

deceased donor transplant

a type of kidney transplant when the kidney has been donated by someone who has died. Also called non-living donor transplant or cadaveric transplant

decontaminate

clean, kill germs, disinfect, sterilize

decrease

take less, cut back, drop, lower, lessen, make less

deep vein thrombosis (DVT)

a blood clot that forms in one or more deep veins in your body

a blood clot in a deep vein and can be life-threatening. Symptoms may include swelling, pain, and tenderness, often in the legs. Risk factors include immobility, hormone therapy, and pregnancy

defibrillator

a machine that uses an electric shock to try and reset your heart or get it beating correctly

external defibrillators can be used on your body during CPR. Internal defibrillators are implanted inside you. Both types use small electric shocks that may prevent your heart from stopping. They also may prevent your heart from beating too slow, too fast, or unevenly

deficiency

lack, not enough

deficient

lacking, not enough, poor

deformity

flaw, a change from the normal shape, not a normal shape, oddly shaped

degenerative

weaken, worsen, decline, decay

dehydrate

not enough water, need water, water loss, remove water

delayed cord clamping (DCC)

a process in which the umbilical cord of the newborn is left intact for an extended period of time during the third stage of labour

delirium

sudden confusion, a sudden confused state of mind

a mental state in which you are confused and not able to think or speak clearly, usually because of fever or an illness

deltoid

arm muscle, muscle in your upper arm

dementia

memory loss that gets worse over time, an illness that causes someone to be unable to think clearly

demographic

general information about a group of people, such as their age, sex, number of children and other facts

demonstrate

prove, show, explain

demyelinating disorder

nerve disease

dental caries

cavities, tooth decay, holes in your teeth

dental implant

fake tooth drilled into your jaw bone

dental prophylaxis

steps your dentist takes to help prevent teeth and gum problems; examples include teeth cleaning and fluoride treatment

dentin

main bone-like part of a tooth

deoxygenated

no oxygen, without oxygen

dependant dialysis

hemodialysis done in a hospital or clinic. It is called "dependent" because you aren't able to do your dialysis yourself and so must go to a treatment centre for your dialysis

dependence

need, rely on

deplete

use up, empty, take all of

dermal

related to your skin, having to do with your skin

dermatologist

skin doctor

dermis

a layer of your skin

designate

label, name, to choose someone or something

detect

find, discover

deteriorate

get worse, fall apart

determine

figure out, decide, find out, test

detrimental

bad, harmful, dangerous

develop

create, change, grow

developmental disability

physical or mental disability, challenged, learning problem

deviate

stray, change, take a different path

diabetes

too much sugar in your blood

a serious disease in which your body can't control the amount of sugar in your blood because it doesn't have enough insulin

diabetes mellitus (Type 1)

when your pancreas can't make enough insulin. Sometimes just called diabetes

diabetes mellitus (Type 2)

when your body doesn't use the insulin that your pancreas makes. Sometimes just called diabetes

diabetes screening

tests to find out if your blood sugar levels are too high. High blood sugar can put you at risk for developing diabetes

diabetic

person who has diabetes

caused by diabetes (diabetic coma), for people with diabetes (diabetic diet)

diagnosis

finding out the cause of an illness or condition, medical answer

a statement that tells the reason for an illness or disease

diagnostic imaging (DI)

x-ray department, imaging services, medical imaging, ultrasound department

dialysis fluid (dialyzate)

special fluid used when you have dialysis. The waste that is removed during dialysis passes into this fluid. It is also called dialyzate or bath

dialyzer

the part of the artificial kidney machine that acts like a filter to clean the wastes from your blood

diaphoresis

sweat, perspiration

diaphoretic

sweaty

diaphragm

the main muscle that helps you breathe

diastolic blood pressure, diastolic pressure

lower number of your blood pressure, the bottom number of your blood pressure

the measure of how hard your blood pushes against your arteries when your heart is relaxed between heart beats

Here is an example:

120   - systolic blood pressure
 80    - diastolic blood pressure

difficulty, difficulties

problem(s), trouble

when something is not easy to do or to deal with

digital fluoroscopy

using X-rays to obtain real-time moving pictures of the inside of your body

x-ray images achieved by a specialized camera and "image intensifier" device which records image motion and dynamic movements of body structures, often accompanied by the injection or ingestion of contrast media.

digital imaging, digital x-ray

x-rays

a type of x-ray done by computer

general term encompassing all methods of modern medical imaging in a modern imaging services department which use computerized methods of image-taking, image storage, and image retrieval. For example - general X-ray, CT scanning, MRI, and ultrasound are all specific types/forms of "digital imaging."

dilate

become wider, become larger, open

dilated cardiomyopathy

a condition where your heart muscle is weakened and your heart becomes enlarged (big). This makes it hard for your heart to pump enough blood to the rest of your body.

dilator

something used to make something become larger, wider, bigger or more open

dilute

weaken, make weaker, add liquid, make less strong

dimension

size

diminish

make smaller, become less, take less

diplopia

double vision

discharge

leave the hospital, going home

ooze, leakage, pus

discharge summary

papers that tell you about your hospital stay and your after hospital plan for your health

documents that are used to tell your family doctor or nurse practitioner about your hospital stay and your after hospital plan for your ongoing care

disclose

show, tell

discoid

shaped like a disc, round and flat

discolouration

change in colour, not the colour it normally is, odd colour

discontinue

stop, end, quit

discuss

talk about, talk with, talk over

disease

illness, sickness

disorder

condition, illness, medical problem

display

show

dissemination (disseminate)

spread, send out, make available

distal

away from

distinguish

tell apart, set apart

DNA (deoxyribonucleic acid)

your genes, genetic material 

a substance that carries genetic information in your cells

domicile

home, house, where you live

donation

gift, present, something you give

double blind

a study where the researchers and the participants don't know what medication the participant is getting

dressing

bandage, covering

putting clothes on

drowsy

sleepy

drug eluting stent (DES)

stents are small, expandable tubes that are inserted during angioplasty into a narrowed or blocked section of the coronary artery to open the artery and improve blood flow

drug-eluting stents prevent a coronary artery from narrowing again after angioplasty or angiogram. They are coated with medication that prevents your artery from clogging up again

 

(also see bare metal stent)

dwelling

a place where you live,

dysarthria

slurred speech

dysfunction

problem, not working

dysfunctional

not working the way it should

dyslexia

a condition that makes it hard for someone to read

dyspepsia

indigestion, heartburn

dysphagia

trouble swallowing

dyspnea

short of breath