Return to dictionary page »

Medical Dictionary For: i

Word PartDefinitionCategory
Iiodine general
-iacondition, state, diseasegeneral
-iasiscondition, stategeneral
iatr/otreatment, medicine general
IBDinflammatory bowel diseasedigestive
IBSirritable bowel syndromedigestive
ibuprofenA nonsteroidal anti-inflammatory agent with analgesic properties used in the therapy of rheumatism and arthritis. General
IBWideal body weight digestive
ICinspiratory capacity respiratory
-icpertaining togeneral
ICDimplantable cardiac defibrillator cardiovascular
ICFintermediate care facility
ichthyosisA family of skin disorders characterized by dry, thickened skin.integumentary
-icianspecialist, practitionergeneral
ICPintracranial pressure nervous
ICSintercostal space directional
ICSHinterstitial cell-stimulating hormone endocrine
icter/ojaundicegeneral
ictusAn attack, blow, stroke, or seizure.General
ICUintensive care unit
idThe part of the personality structure which harbors the unconscious instinctive desires and strivings of the individual. General
ide/oideageneral
idi/odistinctgeneral
IDMinfants of diabetic mothers reproductive
IEDimprovised explosive device general
IFinterferon lymphatic
Igimmunoglobulin lymphatic
IGTimpaired glucose toleranceendocrine
ile/oileum (final section of small intestine)digestive
ilealOf or pertaining to the ileum.Urinary
ileectomySurgical removal of the ileum.Digestive
ileitisInflammation of any segment of the ileum.Digestive
ileostomyA surgical construction of an opening into the ileum on the abdominal wall.Digestive
ileumThe distal and narrowest portion of the small intestine, between the jejunum and the ileocecal valve of the large intestine. Digestive
IleusImpairment of the normal flow of the intestinal contents within the bowel.digestive
ili/oilium (uppermost and largest bone of the pelvis)skeletal
iliac arteryEither of two large arteries originating from the abdominal aorta; they supply blood to the pelvis, abdominal wall and legs. Cardiovascular
iliumThe largest of three bones that make up each half of the pelvic girdle. Skeletal
illusionAn error in perception.General
IMintramuscular muscular
immobilizationThe restriction of the movement of whole or part of the body.General
immun/oimmune, safelymphatic
immunityProtection from diseases, particularly infectious diseases.Lymphatic
immunizationA process for building or augmenting resistance to an infectious disease.Lymphatic
immunoglobulinsAn infection-fighting protein in the blood or secretory fluids that helps destroy bacteria, viruses and toxins.lymphatic
immunosuppressantDeliberate prevention or diminution of the host's immune response.lymphatic
immunotherapyManipulation of the host's immune system in treatment of disease.lymphatic
imperforateNot open.General
impetigoA contagious skin condition common in children, caused by streptococcus, staphylococcus.integumentary
impingement syndromeThe result of chronic and repetitive compression of the rotator-cuff tendons in the shoulder.muscular
implantTo embed.General
impotenceThe inability to sustain a penile erection to allow normal vaginal intercourse.Reproductive
impulsive behaviorAn act performed without delay, reflection, voluntary direction or obvious control in response to a stimulus. General
IMVintermittent mandatory ventilationrespiratory
in vitroIn a glass. In an artificial environment outside a living organismReproductive
in-in, not or fibergeneral
incidenceThe number of new cases of a given disease during a specified period in a population. General
incinerationHigh temperature destruction of waste by burning with reduction to ashes.General
incisionA cut made by a medical professional.general
incisorAny of the four maxillary and four mandibular teeth, having a sharp incisal edge.Skeletal
incontinenceThe inability to control the flow of urine from the bladder.urinary
incubationMaintaining optimal environmental conditions for the growth of microbial or tissue cultures. Also, the time period between exposure to an infectious agent and the appearance of symptoms.General
INDinvestigational new drug
indicationThe basis, evidence or rationale for using a particular treatment or diagnostic test.General
inductionCausing to occur.Reproductive
inf.inferior directional
infantA child between 1 and 23 months of age. General
infarctionTissue death due to lack of oxygenCardiovascular
infectionThe invasion of the body by disease causing agents and the body's reaction.general
infectious myringitisAn infection causing painful blisters on the eardrum. More often seen in children than adults. Causal agent is Mycoplasma.eyes and ears
inferiorbelowdirectional
infertilityInability to conceive and produce viable offspring.Reproductive
inflammationThe response of body tissues to injury, irritation or infection. Usually manifested by the signs of pain, heat, redness and swelling. General
influenzaAcute, contagious viral infection of the respiratory system. Respiratory
infra-below, down, underdirectional
infusion pumpsA device that delivers intravenous fluids at low doses and at a controllable rate.General
inguin/ogroindigestive
inguinal canalA tunnel in the abdominal wall through which a testis descends into the scrotum. Reproductive
inhalationBreathing in.Respiratory
inj.injection General
injectionsIntroduction of substances into the body using a needle and syringe. General
insecticidesAgents used to control insects.General
inseminationThe deposit of seminal fluid within the vagina.Reproductive
insomniaInability to sleep.General
insulinA hormone produced in the pancreas. Regulates glucose levels.endocrine
insulinomaA neoplasm of the pancreas that is one of the chief causes of hypoglycemia.endocrine
integumentary systemThe outer covering of the body composed of the skin and the skin appendages, which are the hair, the nails; and the sebaceous glands and the sweat glands and their ducts. Integumentary
inter-betweendirectional
intercellularBetween the cells.General
interferonA class of small protein and glycoprotein cytokines produced by T cells, fibroblasts, and other cells in response to viral infection and other biologic and synthetic stimuli.Lymphatic
interferonsProteins that are produced by the body's cells as a defensive response to pathogens.lymphatic
intermittencyA urinary tract disorder in which urine flow is not continuous but stops and starts.Urinary
intermittent claudicationMuscle pain caused by too little blood flow, usually during exercise.muscular
internal medicineA medical specialty concerned with the diagnosis and treatment of internal organ diseases.General
interneuronsGroups or combinations of neurons between sensory and motor neurons that govern coordinated activity. Nervous
interphaseThe interval between cell divisions during which the chromosomes are not individually distinguishable.General
interstitialSmall space(s) between biological structures.general
interstitial cystitisPainful bladder syndrome.urinary
intertrigoA superficial dermatitis occurring in areas where skin surfaces come into contact with, and chafe, each other. The condition is caused by moisture and friction.Integumentary
intestinesThe section of the alimentary canal from the stomach to the anal canal. Digestive
intoleranceA patient's inability to tolerate a drug.General
intra-withingeneral
intracellularInside a cell.General
intracranialWithin the skull.General
intracranial embolismBlocking of a blood vessel in the skull by an embolus which can be a thrombus or other undissolved material in the blood stream. Cardiovascular
intracranial hematomaBlood accumulation within the brain or between the brain and the skull,nervous
intraductal papillomaBenign tumors that grow within the breast ductsintegumentary
intrathecalWithin a sheath.General
intrauterineWithin the uterine cavity.Reproductive
intravenousWithin a vein.General
intrinsic muscleA muscle whose origin and insertion are both in the same part or organ.Muscular
intro-withingeneral
introversionA state in which attention is largely directed inward upon one's self, with diminished interest in the outside world.General
intubationThe insertion of a tube, as into the larynx.General
intuitionKnowing without conscious use of reasoning.General
intussusceptionThe movement of a bowel segment into an adjacent segment in the manner of a telescope. The condition is commonest in children. Digestive
inulinA starch found in the tubers and roots of many plants. It is used as a diagnostic aid in tests of kidney functionDigestive
invasionThe entry and proliferation of a pathogen or tumor.General
invertebratesAnimals lacking a spinal column. General
involucrumAn enveloping sheath.General
iod/oiodineGeneral
iodineA nonmetallic element of the halogen group that is represented by the atomic symbol I, atomic number 53. In a solution, it is anti-infective and is used topically. Integumentary
ionAn atom that has a positive or negative electric charge due to a gain or loss of one or more electrons.General
ion/oiongeneral
iontophoresisTherapeutic introduction of ions of soluble salts into tissues by means of electric current.General
-iorpertaining togeneral
ipecacAn emetic.General
IPPBintermittent positive pressure breathing respiratory
ipsi-samedirectional
IQintelligence quotient nervous
IRBinstitutional review board
irid/oiriseyes and ears
iridectomySurgical removal of part of the iris.eyes and ears
iridescenceShining or glittering with the colors of the rainbowGeneral
iridoplegiaParalysis of the sphincter muscle of the iris or the dilator muscleEyes And Ears
irisThe circular pigmented membrane behind the cornea of the eye that gives the eye its color. The iris surrounds a central opening called the pupil. Eyes And Ears
iritisInflammation of the iris.eyes and ears
irradiationExposure to ionizing radiation.General
irrigationThe washing out of a wound using a continuous flow of water or solution.General
IRVinspiratory reserve volume respiratory
is/oequalgeneral
isch/osuppressgeneral
ischemiaA hypoperfusion of blood through an organ or tissue caused by a obstruction of blood vessels. Cardiovascular
ischemic heart diseaseRecurring chest pain or discomfort when a part of the heart does not receive enough blood. Often triggered by exertion or excitement.Cardiovascular
ischemic strokeThe main type of stroke. Occur when a blood vessel that supplies blood to the brain is blocked by a blood clot. nervous
ischiumThe inferior, dorsal portion of the hip bone.Skeletal
isletA small island.General
-ismcondition, processgeneral
-ismusspasm, contractiongeneral
isoantigensAn antigenic substance that occurs only in some individuals of a species, such as the blood group antigens of humans.General
isolationThe separation of a person with an infectious disease from other people.General
isomorphismThe condition of two or more objects being similar in shape or structure.General
isotonic contractionMuscle contraction with negligible change in the force of contraction but shortening of the distance between the origin and insertion. Muscular
isotonic solutionsSolutions having the same osmotic pressure.General
isotopesAtoms of an element species differing in mass number but having the same atomic number.General
-istperson who specializesgeneral
isthmusA narrow part of an organ or body part.General
-iteresembling, the nature ofgeneral
-iteslikegeneral
ithy-erect, straightSkeletal
-itisinflammationgeneral
IUa international unit
IUCDintrauterine contraceptive device reproductive
IUDintrauterine device reproductive
IUFDintrauterine fetal distress reproductive
IUPintrauterine pregnancyreproductive
IVintravenous cardiovascular
IVFin vitro fertilizationreproductive
IVPintravenous pyelogramurinary
IVPBintravenous piggyback

If you want to memorize medical terms, our flash cards are worth a try. Your study efficiency is greatly improved with our smart flash card system. We use a spaced repetition algorithm that presents flash cards based upon your progress over time. This means that your learn more and retain it longer.

An error has occurred. This application may no longer respond until reloaded. Reload 🗙