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Glossary · Nouns · I

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TermTypeDefinitionClassificationsUpdated
Imaumnoun(Islam) the man who leads prayers in a mosqueverifiedMay 18, 2026
Imbalancenouna lack of balance or state of disequilibriumverifiedMay 18, 2026
Imbaubanountropical American tree with large peltate leaves and hollow stemsverifiedMay 18, 2026
Imbecilitynounretardation more severe than a moron but not as severe as an idiotverifiedMay 18, 2026
Imbibernouna person who drinks alcoholic beverages (especially to excess)verifiedMay 18, 2026
Imbibingnounthe act of consuming liquidsverifiedMay 18, 2026
Imbibitionnoun(chemistry) the absorption of a liquid by a solid or gelverifiedMay 18, 2026
Imbricationnouncovering with a design in which one element covers a part of another (as with tiles or shingles)verifiedMay 18, 2026
Imbroglionounan intricate and confusing interpersonal or political situationverifiedMay 18, 2026
Imidazolenounan organic base C3H4N2verifiedMay 18, 2026
Imidenounany of a class of organic compounds that contain the divalent radical -CONHCO-verifiedMay 18, 2026
Iminazolenounan organic base C3H4N2verifiedMay 18, 2026
Imipraminenouna tricyclic antidepressant (trade names Imavate and Tofranil) used to treat clinical depressionverifiedMay 18, 2026
Imitation LeathernounMWEfabric made to look like leatherverifiedMay 18, 2026
Imitative Communications DeceptionnounMWEIntroduction of deceptive messages or signals into an adversary's telecommunications signals. See also Communications Deception and Manipulative Communications Deception.ThreatRegulatedCUIMay 12, 2026
Imitatornounsomeone who (fraudulently) assumes the appearance of anotherverifiedMay 18, 2026
Immaculatenessnounthe state of being spotlessly cleanverifiedMay 18, 2026
Immanencenounthe state of being within or not going beyond a given domainverifiedMay 18, 2026
Immanencynounthe state of being within or not going beyond a given domainverifiedMay 18, 2026
Immaterialitynouncomplete irrelevance requiring no further considerationverifiedMay 18, 2026
Immaturenessnounnot having reached maturityverifiedMay 18, 2026
Immaturitynounnot having reached maturityverifiedMay 18, 2026
Immediacynounlack of an intervening or mediating agencyverifiedMay 18, 2026
Immediate AllergynounMWEan allergic reaction that becomes apparent in a sensitized person only minutes after contactverifiedMay 18, 2026
Immediate ApprehensionnounMWEimmediate intuitive awarenessverifiedMay 18, 2026
Immediate ConstituentnounMWEa constituent of a sentence at the first step in an analysis: e.g., subject and predicateverifiedMay 18, 2026
Immediate MemorynounMWEwhat you can repeat immediately after perceiving itverifiedMay 18, 2026
Immediate PaymentnounMWEprompt payment for goods or services in currency or by checkverifiedMay 18, 2026
Immediatenessnounlack of an intervening or mediating agencyverifiedMay 18, 2026
Immensenessnoununusual largeness in size or extent or numberverifiedMay 18, 2026
Immensitynoununusual largeness in size or extent or numberverifiedMay 18, 2026
Immersionnouna form of baptism in which part or all of a person's body is submergedverifiedMay 18, 2026
Immersion FootnounMWEresembling frostbite but without freezingverifiedMay 18, 2026
Immersion HeaternounMWEa heating element that is immersed in the liquid that is to be heated (as in a hot-water tank)verifiedMay 18, 2026
Immigrantnouna person who comes to a country where they were not born in order to settle thereverifiedMay 18, 2026
Immigrant ClassnounMWErecent immigrants who are lumped together as a class by their low socioeconomic status in spite of different cultural backgroundsverifiedMay 18, 2026
Immigrationnounmigration into a place (especially migration to a country of which you are not a native in order to settle there)verifiedMay 18, 2026
Imminencenounthe state of being imminent and liable to happen soonverifiedMay 18, 2026
Imminencynounthe state of being imminent and liable to happen soonverifiedMay 18, 2026
Imminent AbortionnounMWEthe appearance of symptoms that signal the impending loss of the products of conceptionverifiedMay 18, 2026
Imminentnessnounthe state of being imminent and liable to happen soonverifiedMay 18, 2026
Immobilisationnounfixation (as by a plaster cast) of a body part in order to promote proper healingverifiedMay 18, 2026
Immobilitynounthe quality of not movingverifiedMay 18, 2026
Immobilizationnounfixation of a body part in order to promote proper healing, for example in a plaster cast or by a splintverifiedMay 18, 2026
Immobilizingnounthe act of limiting movement or making incapable of movementverifiedMay 18, 2026
Immoderatenessnounthe quality of being excessive and lacking in moderationverifiedMay 18, 2026
Immoderationnounthe quality of being excessive and lacking in moderationverifiedMay 18, 2026
Immodestynounthe perverse act of exposing and attracting attention to your own genitalsverifiedMay 18, 2026
Immolationnounkilling or offering as a sacrificeverifiedMay 18, 2026
Immoralitynounthe quality of not being in accord with standards of right or good conductverifiedMay 18, 2026
Immortalitynounthe quality or state of being immortalverifiedMay 18, 2026
Immortellenounmostly widely cultivated species of everlasting flowers having usually purple flowersverifiedMay 18, 2026
Immotilitynounlacking an ability to moveverifiedMay 18, 2026
Immovabilitynounnot capable of being moved or rearrangedverifiedMay 18, 2026
Immovable BandagenounMWEa bandage of cloth impregnated with a substance (e.g., plaster of Paris) that hardens soon after it is appliedverifiedMay 18, 2026
Immovablenessnounnot capable of being moved or rearrangedverifiedMay 18, 2026
Immune CarriernounMWE(medicine) a person (or animal) who has some pathogen to which he is immune but who can pass it on to othersverifiedMay 18, 2026
Immune Gamma GlobulinnounMWEa class of proteins produced in lymph tissue in vertebrates and that function as antibodies in the immune responseverifiedMay 18, 2026
Immune GlobulinnounMWEa class of proteins produced in lymph tissue in vertebrates and that function as antibodies in the immune responseverifiedMay 18, 2026
Immune ReactionnounMWEa bodily defense reaction that recognizes an invading substance (an antigen: such as a virus or fungus or bacteria or transplanted organ) and produces antibodies specific against that antigenverifiedMay 18, 2026
Immune ResponsenounMWEa bodily defense reaction that recognizes an invading substance (an antigen: such as a virus or fungus or bacteria or transplanted organ) and produces antibodies specific against that antigenverifiedMay 18, 2026
Immune Serum GlobulinnounMWEa class of proteins produced in lymph tissue in vertebrates and that function as antibodies in the immune responseverifiedMay 18, 2026
Immune Suppressant DrugnounMWEa drug that lowers the body's normal immune responseverifiedMay 18, 2026
Immune SystemnounMWEa system (including the thymus and bone marrow and lymphoid tissues) that protects the body from foreign substances and pathogenic organisms by producing the immune responseverifiedMay 18, 2026
Immunisationnounthe act of making immune (especially by inoculation)verifiedMay 18, 2026
Immunitynounthe condition in which an organism can resist diseaseverifiedMay 18, 2026
Immunizationnounthe act of making immune (especially by inoculation)verifiedMay 18, 2026
Immunizing AgentnounMWEany substance or organism that provokes an immune response (produces immunity) when introduced into the bodyverifiedMay 18, 2026
Immunoassaynounidentification of a substance (especially a protein) by its action as an antigenverifiedMay 18, 2026
Immunochemical AssaynounMWEidentification of a substance (especially a protein) by its action as an antigenverifiedMay 18, 2026
Immunochemistrynounthe field of chemistry concerned with chemical processes in immunology (such as chemical studies of antigens and antibodies)verifiedMay 18, 2026
Immunocompetencenounthe ability to develop an immune response following exposure to an antigenverifiedMay 18, 2026
Immunodeficiencynounimmunological disorder in which some part of the body's immune system is inadequate and resistance to infectious diseases is reducedverifiedMay 18, 2026
Immunoelectrophoresisnounelectrophoresis to separate antigens and antibodiesverifiedMay 18, 2026
Immunofluorescencenoun(immunology) a technique that uses antibodies linked to a fluorescent dye in order to study antigens in a sample of tissueverifiedMay 18, 2026
Immunogennounany substance or organism that provokes an immune response (produces immunity) when introduced into the bodyverifiedMay 18, 2026
Immunogenicitynounthe property of eliciting an immune responseverifiedMay 18, 2026
Immunoglobulinnouna class of proteins produced in lymph tissue in vertebrates and that function as antibodies in the immune responseverifiedMay 18, 2026
Immunoglobulin anounMWEone of the most common of the five major classes of immunoglobulinsverifiedMay 18, 2026
Immunoglobulin DnounMWEone of the five major classes of immunoglobulinsverifiedMay 18, 2026
Immunoglobulin EnounMWEone of the five major classes of immunoglobulinsverifiedMay 18, 2026
Immunoglobulin GnounMWEone of the five major classes of immunoglobulinsverifiedMay 18, 2026
Immunoglobulin MnounMWEone of the five major classes of immunoglobulinsverifiedMay 18, 2026
Immunohistochemistrynounan assay that shows specific antigens in tissues by the use of markers that are either fluorescent dyes or enzymes (such as horseradish peroxidase)verifiedMay 18, 2026
Immunologic ResponsenounMWEa bodily defense reaction that recognizes an invading substance (an antigen: such as a virus or fungus or bacteria or transplanted organ) and produces antibodies specific against that antigenverifiedMay 18, 2026
Immunological DisordernounMWEa disorder of the immune systemverifiedMay 18, 2026
Immunologistnouna medical scientist who specializes in immunologyverifiedMay 18, 2026
Immunologynounthe branch of medical science that studies the body's immune systemverifiedMay 18, 2026
Immunopathologynounthe branch of immunology that deals with pathologies of the immune systemverifiedMay 18, 2026
Immunosuppressantnouna drug that lowers the body's normal immune responseverifiedMay 18, 2026
Immunosuppressionnounlowering the body's normal immune response to invasion by foreign substancesverifiedMay 18, 2026
Immunosuppressornouna drug that lowers the body's normal immune responseverifiedMay 18, 2026
Immunotherapynountherapy designed to produce immunity to a disease or to enhance resistance by the immune systemverifiedMay 18, 2026
Immurementnounthe state of being imprisonedverifiedMay 18, 2026
Immutabilitynounthe quality of being incapable of mutationverifiedMay 18, 2026
Immutablenessnounthe quality of being incapable of mutationverifiedMay 18, 2026
Imou PinenounMWEtall New Zealand timber treeverifiedMay 18, 2026
Impnoun(folklore) fairies that are somewhat mischievousverifiedMay 18, 2026
ImpactnounThe magnitude of harm that can be expected to result from the consequences of unauthorized disclosure of information, unauthorized modification of information, unauthorized destruction of information, or loss of information or information system availability.MetricMay 9, 2026
Impact analysisnounMWEA study to prioritize the criticality of information resources for the enterprise based on costs (or consequences) of adverse events In an impact analysis, threats to assets are identified and potential business losses determined for different time periods. This assessment is used to justify the extent of safeguards that are required and recovery time frames. This analysis is the basis for establishing the recovery strategy.ProcessMay 12, 2026