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Glossary · Nouns · I

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TermTypeDefinitionClassificationsUpdated
Indeterminacy PrinciplenounMWE(quantum theory) the theory that it is impossible to measure both energy and time (or position and momentum) completely accurately at the same timeverifiedMay 18, 2026
Indeterminatenessnounthe quality of being vague and poorly definedverifiedMay 18, 2026
Indeterminationnounthe quality of being vague and poorly definedverifiedMay 18, 2026
Index CasenounMWEthe earliest documented case of a disease that is included in an epidemiological studyverifiedMay 18, 2026
Index FingernounMWEthe finger next to the thumbverifiedMay 18, 2026
Index FossilnounMWEa fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is foundverifiedMay 18, 2026
Index FundnounMWEa mutual fund that invests in the stocks that are the basis of a well-known stock or bond indexverifiedMay 18, 2026
Index NumbernounMWEa number or ratio (a value on a scale of measurement) derived from a series of observed factsverifiedMay 18, 2026
Index of RefractionnounMWEthe ratio of the velocity of light in a vacuum to that in a mediumverifiedMay 18, 2026
Index RegisternounMWEIn computer science, a register used to determine the address of an operand.verifiedMay 18, 2026
Indexationnouna system of economic regulation: wages and interest are tied to the cost-of-living index in order to reduce the effects of inflationverifiedMay 18, 2026
Indexernounsomeone who provides an indexverifiedMay 18, 2026
Indexingnounthe act of classifying and providing an index in order to make items easier to retrieveverifiedMay 18, 2026
India PapernounMWEa thin tough opaque paper used in fine booksverifiedMay 18, 2026
Indian CherrynounMWEdeciduous shrub of eastern and central United States having black berrylike fruitverifiedMay 18, 2026
Indian ClubnounMWEa bottle-shaped club used in exercisesverifiedMay 18, 2026
Indian GivernounMWEan offensive term for someone who asks you to return a present he has given youverifiedMay 18, 2026
Indian LodgenounMWEany of various Native American dwellingsverifiedMay 18, 2026
Indian MustardnounMWEAsiatic mustard used as a potherbverifiedMay 18, 2026
Indian ShotnounMWEcanna grown especially for its edible rootstock from which arrowroot starch is obtainedverifiedMay 18, 2026
Indian SummernounMWEa period of unusually warm weather in the autumnverifiedMay 18, 2026
Indicantnouna number or ratio (a value on a scale of measurement) derived from a series of observed factsverifiedMay 18, 2026
Indicationnouna datum about some physical state that is presented to a user by a meter or similar instrumentverifiedMay 18, 2026
Indicative MoodnounMWEa mood (grammatically unmarked) that represents the act or state as an objective factverifiedMay 18, 2026
indicatornounRecognized action, specific, generalized, or theoretical, that an adversary might be expected to take in preparation for an attack.EventMay 9, 2026
Indicator LampnounMWEindicator consisting of a light to indicate whether power is on or a motor is in operationverifiedMay 18, 2026
Indictabilitynounthe state of being liable to impeachmentverifiedMay 18, 2026
Indictionnouna 15-year cycle used as a chronological unit in ancient Rome and adopted in some medieval kingdomsverifiedMay 18, 2026
Indictmentnouna formal document written for a prosecuting attorney charging a person with some offenseverifiedMay 18, 2026
Indifferencenounthe trait of lacking enthusiasm for or interest in things generallyverifiedMay 18, 2026
Indigennounan indigenous person who was born in a particular placeverifiedMay 18, 2026
Indigencenouna state of extreme poverty or destitutionverifiedMay 18, 2026
Indigenenounan indigenous person who was born in a particular placeverifiedMay 18, 2026
Indigenous LanguagenounMWEa language that originated in a specified place and was not brought to that place from elsewhereverifiedMay 18, 2026
Indigenousnessnounnativeness by virtue of originating or occurring naturally in a particular placeverifiedMay 18, 2026
Indigestibilitynounthe property of being difficult to digestverifiedMay 18, 2026
Indigestiblenessnounthe property of being difficult to digestverifiedMay 18, 2026
Indigestionnouna disorder of digestive function characterized by discomfort or heartburn or nauseaverifiedMay 18, 2026
Indignationnouna feeling of righteous angerverifiedMay 18, 2026
Indignitynounan affront to one's dignity or self-esteemverifiedMay 18, 2026
Indigo BirdnounMWEsmall deep blue North American buntingverifiedMay 18, 2026
Indigo BroomnounMWEmuch-branched erect herb with bright yellow flowersverifiedMay 18, 2026
Indigo BuntingnounMWEsmall deep blue North American buntingverifiedMay 18, 2026
Indigo FinchnounMWEsmall deep blue North American buntingverifiedMay 18, 2026
Indigo PlantnounMWEdeciduous subshrub of southeastern Asia having pinnate leaves and clusters of red or purple flowersverifiedMay 18, 2026
Indigo SnakenounMWElarge dark-blue nonvenomous snake that invades burrowsverifiedMay 18, 2026
Indigo SquillnounMWEeastern camasverifiedMay 18, 2026
Indigotinnouna blue dye obtained from plants or made syntheticallyverifiedMay 18, 2026
Indinavirnouna protease inhibitor (trade name Crixivan) used for treating HIVverifiedMay 18, 2026
Indirect AntonymnounMWEantonyms whose opposition is mediated (e.g., the antonymy of `wet' and `parched' is mediated by the similarity of `parched' to `dry')verifiedMay 18, 2026
Indirect CorrelationnounMWEa correlation in which large values of one variable are associated with small values of the otherverifiedMay 18, 2026
Indirect DiscoursenounMWEa report of a discourse in which deictic terms are modified appropriately (e.g., 'he said `I am a fool' would be modified to `he said he is a fool'')verifiedMay 18, 2026
Indirect EvidencenounMWEevidence providing only a basis for inference about the fact in disputeverifiedMay 18, 2026
Indirect ExpressionnounMWEan indirect way of expressing somethingverifiedMay 18, 2026
Indirect FirenounMWEfire delivered on a target that is not itself used as the point of aim for the weaponsverifiedMay 18, 2026
Indirect ImmunofluorescencenounMWEa method of using fluorescence microscopy to detect the presence of an antigen indirectlyverifiedMay 18, 2026
Indirect LightingnounMWEa concealed lighting fixtureverifiedMay 18, 2026
Indirect ObjectnounMWEthe object that is the recipient or beneficiary of the action of the verbverifiedMay 18, 2026
Indirect RequestnounMWEan expression of some desire or inclinationverifiedMay 18, 2026
Indirect TaxnounMWEa tax levied on goods or services rather than on persons or organizationsverifiedMay 18, 2026
Indirect TransmissionnounMWEa transmission mechanism in which the infectious agent is transferred to the person by a fomite of vectorverifiedMay 18, 2026
Indirectionnoundeceitful action that is not straightforwardverifiedMay 18, 2026
Indirectnessnounhaving the characteristic of lacking a true course toward a goalverifiedMay 18, 2026
Indisciplinenounthe trait of lacking disciplineverifiedMay 18, 2026
Indiscreetnessnounlacking good judgmentverifiedMay 18, 2026
Indiscretionnounthe trait of being injudiciousverifiedMay 18, 2026
Indispensabilitynounthe quality possessed by something that you cannot possibly do withoutverifiedMay 18, 2026
Indispensablenessnounthe quality possessed by something that you cannot possibly do withoutverifiedMay 18, 2026
Indispositionnouna certain degree of unwillingnessverifiedMay 18, 2026
Indisputabilitynounthe quality of being beyond question or dispute or doubtverifiedMay 18, 2026
Indistinctnessnounthe quality of being indistinct and without sharp outlinesverifiedMay 18, 2026
Indistinguishabilitynounexact samenessverifiedMay 18, 2026
Indiumnouna rare soft silvery metallic elementverifiedMay 18, 2026
individualnounA citizen of the United States or an alien lawfully admitted for permanent residence. Agencies may, consistent with individual practice, choose to extend the protections of the Privacy Act and E-Government Act to businesses, sole proprietors, aliens, etc.IdentityRegulatedPIIMay 9, 2026
individual accountnounMWEAn account which only has one individual is assigned to it.IdentityRegulatedMay 9, 2026
Individual AccountabilitynounMWEAbility to associate positively the identity of a user with the time, method, and degree of access to an information system.RequirementRegulatedMay 9, 2026
Individual FairnessnounMWEA fairness metric that checks whether similar individuals are classified similarlyRequirementMay 18, 2026
Individual Retirement AccountnounMWEa retirement plan that allows you to contribute a limited yearly sum toward your retirementverifiedMay 18, 2026
Individualisationnoundiscriminating the individual from the generic group or speciesverifiedMay 18, 2026
Individualismnouna belief in the importance of the individual and the virtue of self-reliance and personal independenceverifiedMay 18, 2026
Individualitynounthe distinct personality of an individual regarded as a persisting entityverifiedMay 18, 2026
Individualizationnoundiscriminating the individual from the generic group or speciesverifiedMay 18, 2026
Individuationnoundiscriminating the individual from the generic group or speciesverifiedMay 18, 2026
Indoctrinationnounteaching someone to accept doctrines uncriticallyverifiedMay 18, 2026
Indoleacetic AcidnounMWEa plant hormone promoting elongation of stems and rootsverifiedMay 18, 2026
Indolebutyric AcidnounMWEa synthetic plant hormone promoting elongation of stems and rootsverifiedMay 18, 2026
Indolencenouninactivity resulting from a dislike of workverifiedMay 18, 2026
Indomethacinnouna nonsteroidal anti-inflammatory drug (trade name Indocin)verifiedMay 18, 2026
Indomitabilitynounthe property being difficult or impossible to defeatverifiedMay 18, 2026
Indoor GardennounMWEa greenhouse in which plants are arranged in a pleasing mannerverifiedMay 18, 2026
Indorsementnouna promotional statement (as found on the dust jackets of books)verifiedMay 18, 2026
Indorsernouna person who transfers his ownership interest in something by signing a check or negotiable securityverifiedMay 18, 2026
Indrinounlarge short-tailed lemur of Madagascar having thick silky fur in black and white and fawnverifiedMay 18, 2026
Indubitabilitynounthe quality of being beyond question or dispute or doubtverifiedMay 18, 2026
Induced AbortionnounMWEa deliberate termination of pregnancyverifiedMay 18, 2026
Inducementnounact of bringing about a desired resultverifiedMay 18, 2026
Inducernounsomeone who tries to persuade or induce or lead onverifiedMay 18, 2026
Inducingnounact of bringing about a desired resultverifiedMay 18, 2026
Inductancenounan electrical phenomenon whereby an electromotive force (EMF) is generated in a closed circuit by a change in the flow of currentverifiedMay 18, 2026
Inductance UnitnounMWEa measure of the property of an electric circuit by which an electromotive force is induced in itverifiedMay 18, 2026