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Medical Dictionary: d

/dper day
D&Cdilatation and curettagereproductive
D&Vdiarrhea & vomitingdigestive
dacry/otearseyes and ears
dacryoadenitisInflammation of the lacrimal glands (the eye’s tear-producing glands).eyes and ears
dacryocystitisInflammation of the lacrimal sac.Eyes and Ears
dactyl/ofingers, toesskeletal
dactylitisPainful inflammation of the fingers or toes.Skeletal
danderFine, dry scales from the scalp.Integumentary
dandruffExcessive shedding of dry scaly material from the scalp.Integumentary
dantroleneMuscle relaxant drug.Muscular
dark adaptationAdjustment of the retina and pupil of the eyes under conditions of low light enabling increased sensitivity to light.Eyes and Ears
DAWdispense as written
dBdecibel Eyes And Ears
DBPdiastolic blood pressure cardiovascular
DDxdifferential diagnosisgeneral
de-lack of, without, less, downgeneral
DEADrug Enforcement Agency
deafnessA general term for the complete loss of the ability to hear from both ears. Eyes and Ears
deathIrreversible cessation of all bodily functions.General
debridementA procedure used to remove dead tissue and contaminated substances from a wound, by soaking or excising.integumentary
decapitationRemoval of the head.General
decayThe gradual decomposition of dead organisms after death.General
decelerationA decrease in the rate of speed. General
deci-one tenthgeneral
decibelA unit for comparing levels of power on a logarithmic scale. Commonly used for measuring sound.General
deciduaThe membrane lining the wall of the uterus during pregnancy.Reproductive
decongestantA substance that reduces nasal congestion.Respiratory
decubitusThe recumbent position. Lying on one's side.General
deepBelow the surface of the skin or within body cavity or limbs.directional
deetA common insect repellent.Integumentary
defamationFalse written or spoken statements that are known to be false and that are damaging to the reputation of a person, group or organization. General
defibrillationUse of an electronic device to give an electric shock to the heart to reestablish normal cardiac rhythm.Cardiovascular
degenerationThe gradual loss of function of a cell, tissue or organ.General
dehydrationThe condition that results from excessive loss of water from a living organism. General
deja vuA subjective feeling that a current experience is a repetition of a previous experience.General
deliriumA state of mental confusion that can occur due to illness, surgery or using certain medications.nervous
delirium tremensThe most severe form of alcohol withdrawal, causing confusion, irregular heart rate, and sweating.nervous
deltoidThick triangular muscle in the shoulder whose function is to abduct, flex, and extend the arm.Muscular
delusionA belief that is clearly false.nervous
dem/opeople, populationgeneral
dementiaA group of symptoms caused by brain disorder. Not a specific disease. Causes are peripheral vascular disease, stroke, toxins, or Alzheimer's.nervous
dendriteShort branches of the nerve cell body that receive stimuli from other neurons. Nervous
dengueAn acute febrile disease transmitted by the bite of infected Aedes mosquitoes. It occurs in tropical regions and is characterized by fever, severe pain, headache and rash. Lymphatic
denialRefusal to admit the truth or reality of a situation or experience. General
dentinThe main material of teeth. It is surrounded by pulp, covered by enamel on the crown and cementum on the root.Skeletal
deodorantA substance that represses or masks odors.Integumentary
deoxyribonucleic acidThe primary carrier of genetic information. It consists of two chains of nucleotides that are twisted into a double helix and joined by hydrogen bonds between complementary bases.General
dependenceThe state of reliance or subservience to another person or a substance.General
depersonalizationA feeling of unreality concerning the self or the environment. Nervous
depreciationDecline in value of capital assets over time.General
depression1) A sunken or hollow area. 2) Mental state of feeling sad, lonely, discouraged, hopeless or dejected.General
deprevationThe loss or lack of something that is needed. General
derailmentMental disorder marked by speech consisting of a sequence of unrelated or remotely related ideas.General
derivativeSomething produced as a modification of another object or thought.General
Dermdermatology Integumentary
dermatitisInflammation of the skin. May be caused by allergic reaction, drugs, infection or sun exposure.integumentary
dermatologyA medical specialty concerned with the structure, functions, diseases and treatment of the skin.Integumentary
dermisA layer of vascularized connective tissue underneath the epidermis. Embedded in or beneath it are glands, hair follicles, nerves and lymphatic vessels. Integumentary
desiccationRemoval of moisture from a substance.General
-desisbind, fixationskeletal
desmoid tumorA dense, fibrous neoplasm. Occurs on the abdomen, upper arms, neck and head.General
desmosomesAn area of contact between adjacent cells, particularly epithelia.Integumentary
detergentA cleaning agent.General
detoxificationThe removal of poisons, alcohol or drugs and their effects from a patient.General
detritionWearing away by use or friction.General
deviantPertaining to an object or person that departs from normal. Abnormal.General
dew pointThe temperature at which water vapor in the air condenses to liquid.General
DIdiabetes insipidus endocrine
di-two, twice, doublegeneral
dia-complete, throughurinary
diabetes insipidusA hormonal condition that causes the individual to have excessive and frequent urination. Inadequate ADH secretion.endocrine
diabetes mellitusA grouping of diseases that affect how the body uses glucose. Type I is lack of insulin, Type II is insulin resistance.endocrine
diabetic retinopathyThe most common diabetic eye disease. It occurs when blood vessels in the retina are damaged. Leading cause of blindness in working age adults.endocrine
diagnosisThe determination of the nature of a disease or condition, or the distinguishing of one disease or condition from another. General
diagnosis-related groupsA system for classifying patient care by relating common characteristics such as diagnosis, treatment, and age to an expected consumption of hospital resources and length of stay. General
dialysisA therapeutic procedure used in patients with kidney failure for removal of harmful wastes and fluids from the blood.urinary
diaper rashDermatitis of the buttocks and thighs due to contact with urine or feces.Integumentary
diaphoresisProfuse sweating that is artificially induced.integumentary
diaphragmThe muscle sheet that that separates the thoracic cavity from the abdomen. The diaphragm's contraction and relaxation changes the volume of the thoracic cavity, aiding breathing. Respiratory
diarrheaThe onset of three or more loose or liquid bowel movements in a day.Digestive
diastolePart of the heart rhythm when the ventricles passively relax and refill with blood. Cardiovascular
diastolic blood pressureAtrial blood pressure during diastole when the heart is resting. The second number in a blood pressure reading.Cardiovascular
diathesisGenetic predisposition to certain diseases or abnormalities.General
DICdisseminated intravascular coagulation cardiovascular
dicroticA heartbeat with two separate peaks. Cardiovascular
dielectricInsulating material that can be polarized by an applied electric field.General
dietary fiberIndigestible carbohydrate materials. Can be soluble or insoluble in water. Digestive
dieteticPertaining to food and nutrition.Digestive
dif-separation, taking apart, reversalgeneral
differential diagnosisDistinguishing between two or more conditions having similar symptoms by systematic clinical comparison.General
differentiationThe acquisition of functions or forms different that the original.General
diffusionThe process of particles in gases and liquids to move from areas of high concentration to areas of lower concentration resulting in even distribution of such particles.General
digdigitalis; digoxin
digestionThe process of converting food into absorbable substances for metabolism and use by the body. Digestive
digestive systemA group of structures, organs and glands stretching from the mouth to the anus, that breakdown food substances, absorb nutrients and remove waste.Digestive
digit/ofinger, toeskeletal
digitalisMedicines that strengthen heart contraction and to slow heart rates, particularly for atrial fibrillation.Cardiovascular
digitizationThe conversion of images, sounds or text into a digital form.General
dildilute; diluted
dilat/oenlarge, expandgeneral
dilationCausing the increase in the diameter of an organ, vessel or body opening.General
diopterA unit of measurement of the refractive power of a lens.Eyes and Ears
dioxinHighly toxic, persistent environmental pollutant. A contaminant of a widely used herbicide.General
diphtheriaA bacterial infection of the upper respiratory tract that causes a thick web to form in the back of the throat. May be fatal. Preventable with immunization. Can also damage heart muscle and nerves.Respiratory
dipl/odouble, two-sidedgeneral
diplegiaParalysis involving both sides of the body.Nervous
diplopiaDouble vision.eyes and ears
dipsomaniaUncontrollable, recurring craving for alcohol.General
dis-twice, apart, notdirectional
discA rounded, flat plate.General
dischargeTo release. The substance that is released.General
disclosureThe revealing of information. General
diseaseA disorder of an organ or body function. Characterized by signs and symptoms.General
disinfectantSubstance that kills or inhibits harmful microorganisms.General
disinfectionKilling pathogens or rendering them harmless.General
dislocationDisplacement of a body part from its normal position. Commonly used to refer to a bone displaced from a joint.Skeletal
disorientationA mentally confused state. Loss of one's bearings.General
dissectionThe separation of tissues for surgical reasons or for analysis. General
dissociationSeparation of a particular of thoughts or emotions from normal consciousness.General
dissolveTo disperse a solid in a solution.General
dist/odistant, fardirectional
distalfarthest from the origindirectional
distemperHighly contagious and dangerous viral diseases of animals, particularly dogs.General
distillationA process of separating the components of a liquid mixture by vaporization and condensation. General
distortionA state of being twisted out of shape. A defense mechanism to disguise unacceptable thoughts.General
diuresisIncreased excretion of urine.urinary
diureticsMedication that promote the excretion of urine, decreasing fluids in the blood vessels and reducing blood pressure. Also known as water pills.Cardiovascular
diurnalDaily or relating to daylight hours.General
diverticulitisAn inflammation in the diverticula of the intestinal tract.digestive
diverticulosisThe presence of multiple pouches, usually in the colonic or gastric wall.digestive
diverticulumA pouch or sac developed from a tubular or saccular organ, such as the gastrointestinal tract. Digestive
DJDdegenerative joint disease skeletal
DKAdiabetic ketoacidosis endocrine
DMdiabetes mellitus endocrine
DNAdeoxyribonucleic acid general
DNRdo not resuscitate cardiovascular
DOAdead on arrival general
DOBdate of birth
DOEdyspnea on exertion respiratory
dominantExhibiting a ruling influence. In genetics, capable of expression when carried by only one of a pair of homologous chromosomes.General
donorA human, animal or other organism that provides tissue for another body.General
dopamineA central nervous system neurotransmitter.Nervous
doppler effectChanges in the observed frequency of sound, light, or radio waves due to the relative motion of source and observer. General
dors/oback of bodydirectional
dorsalPertaining to the back or posterior.Skeletal
dorsiflexionThe movement of the ankle joint that brings the dorsal (top region) of the foot towards the shin.muscular
dorsumtop of the footdirectional
down syndromeA congenital disorder characterized by small size, hypotonia, protruding tongue, small ears, short, broad hands and cognitive impairment. General
DPLdiagnostic peritoneal lavagegeneral
DPTdiphtheria, pertussis, tetanus (vaccine) lymphatic
drainageThe removal of fluids or discharges from the body, such as from a wound, sore, or cavity. General
DREdigital rectal examination digestive
DRGdiagnosis-related group
dry eye syndromeCorneal and conjunctival dryness due to deficient tear production.Eyes and Ears
dry socketAn inflammation of a tooth socket, that can occur after tooth extraction, caused by the disintegration of a blood clot.General
DSBdrug-seeking behavior
DTRdeep tendon reflexmuscular
DTsdelirium tremens nervous
DUBdysfunctional uterine bleedingreproductive
duct/oto leadgeneral
duodenitisInflammation of the duodenum section of the small intestine.Digestive
duodenumThe proximal (first) portion of the small intestine, extending from the pylorus to the jejunum.Digestive
dur/ohard, dura maternervous
dura materThe dense, leathery membrane covering and protecting the brain and spinal cord.nervous
DVTdeep vein thrombosis cardiovascular
dwarfismAbnormally short in stature.General
DWIdriving while intoxicated general
Dxdiagnosis general
dynam/opower, strengthgeneral
dys-bad, painful, abnormalgeneral
dysarthriaDifficulty in articulating words caused by impairment of the pharynx, larynx, tongue, or face muscles.General
dysenteryAcute inflammation of the intestine marked by frequent watery stools, often with blood and by pain, fever, and dehydration.Digestive
dysgenesisDefective development.General
dyskinesiaInvoluntary muscle movements of the face, trunk, neck and extremities and difficulty with voluntary movements. Often associated with the use of certain medications. muscular
dyslexiaA common condition that affects the way the brain processes written and spoken language. nervous
dysmenorrheaPainful cramps that can occur immediately before or during the menstrual period. reproductive
dyspepsiaImpaired digestion, especially after eating. digestive
dysphagiaDifficulty in swallowing.digestive
dysphoniaDifficulty in speaking. Respiratory
dysplasiaAbnormal development in tissues or organs.General
dysplastic neviUnusual, benign moles that may resemble melanoma.integumentary
dyspneaDifficult or labored breathing. Can indicate heart failure or a respiratory abnormality.Respiratory
dyssomniaA disorder in which normal sleep patterns are disrupted.General
dystociaDifficult childbirth.Reproductive
dystoniaA disorder characterized by involuntary muscle contractions that cause slow repetitive movements or abnormal postures.muscular
dystrophyAny abnormal condition caused by defective nutritionMuscular
dysuriaPainful or difficult urination.Urinary

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