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Glossary · Nouns · I

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TermTypeDefinitionClassificationsUpdated
Ignition CoilnounMWEan induction coil that converts current from a battery into the high-voltage current required by spark plugsverifiedMay 18, 2026
Ignition InterlocknounMWEa device that prevents an automotive engine from startingverifiedMay 18, 2026
Ignition KeynounMWEa key that operates the ignition switch of an automotive engineverifiedMay 18, 2026
Ignition LocknounMWEa restraint incorporated into the ignition switch to prevent the use of a vehicle by persons who do not have the keyverifiedMay 18, 2026
Ignition SwitchnounMWEswitch that operates a solenoid that closes a circuit to operate the starterverifiedMay 18, 2026
Ignition SystemnounMWEthe mechanism that ignites the fuel in an internal-combustion engineverifiedMay 18, 2026
Ignitornouna device for lighting or igniting fuel or charges or firesverifiedMay 18, 2026
Ignobilitynounthe quality of being ignobleverifiedMay 18, 2026
Ignoblenessnounthe quality of being ignobleverifiedMay 18, 2026
Ignominiousnessnoununworthiness meriting public disgrace and dishonorverifiedMay 18, 2026
Ignominynouna state of dishonorverifiedMay 18, 2026
Ignoramusnounan ignorant personverifiedMay 18, 2026
Ignorancenounthe lack of knowledge or educationverifiedMay 18, 2026
Ignorantnessnounignorance (especially of orthodox beliefs)verifiedMay 18, 2026
Ignoratio ElenchinounMWEthe logical fallacy of supposing that an argument proving an irrelevant point has proved the point at issueverifiedMay 18, 2026
Iguananounlarge herbivorous tropical American arboreal lizards with a spiny crest along the backverifiedMay 18, 2026
Iguanidnounlizards of the New World and Madagascar and some Pacific islandsverifiedMay 18, 2026
Iguanid LizardnounMWElizards of the New World and Madagascar and some Pacific islandsverifiedMay 18, 2026
Iguanodonnounmassive herbivorous bipedal dinosaur with a long heavy tailverifiedMay 18, 2026
Ijtihadnounthe endeavor of a Moslem scholar to derive a rule of divine law from the Koran and Hadith without relying on the views of other scholarsverifiedMay 18, 2026
Ikonnouna visual representation (of an object or scene or person or abstraction) produced on a surfaceverifiedMay 18, 2026
Ilamanountropical American tree grown in southern United States having a whitish pink-tinged fruitverifiedMay 18, 2026
Ilama TreenounMWEtropical American tree grown in southern United States having a whitish pink-tinged fruitverifiedMay 18, 2026
Ilang-Ilangnounevergreen Asian tree with aromatic greenish-yellow flowers yielding a volatile oilverifiedMay 18, 2026
Ileal ArterynounMWEbranch of the superior mesenteric artery that supplies the ileumverifiedMay 18, 2026
Ileitisnouninflammation of the ileumverifiedMay 18, 2026
Ileocecal ValvenounMWEvalve between the ileum of the small intestine and the cecum of the large intestineverifiedMay 18, 2026
Ileocolic ArterynounMWEan artery that originates from the superior mesenteric artery and supplies the terminal part of the ileum and the cecum and the vermiform appendix and the ascending colonverifiedMay 18, 2026
Ileocolic VeinnounMWEa vein that drains the end of the ileum and the appendix and the cecum and the lower part of the ascending colonverifiedMay 18, 2026
Ileostomynounsurgical procedure that creates an opening from the ileum through the abdominal wall to function as an anusverifiedMay 18, 2026
Ileumnounthe part of the small intestine between the jejunum and the cecumverifiedMay 18, 2026
Ileusnounblockage of the intestine (especially the ileum) that prevents the contents of the intestine from passing to the lower bowelverifiedMay 18, 2026
Iliac ArterynounMWEone of the large arteries supplying blood to the pelvis and legsverifiedMay 18, 2026
Iliac VeinnounMWEone of three veins draining the pelvic areaverifiedMay 18, 2026
Iliolumbar ArterynounMWEan artery that originates in the internal iliac artery and supplies the pelvic muscles and bonesverifiedMay 18, 2026
Iliolumbar VeinnounMWEa branch of the internal iliac veinverifiedMay 18, 2026
Iliumnounthe upper and widest of the three bones making up the hipboneverifiedMay 18, 2026
Ilknouna kind of personverifiedMay 18, 2026
Ill FamenounMWEthe state of being known for some unfavorable act or qualityverifiedMay 18, 2026
Ill HealthnounMWEa state in which you are unable to function normally and without painverifiedMay 18, 2026
Ill HumornounMWEan angry and disagreeable moodverifiedMay 18, 2026
Ill HumournounMWEan angry and disagreeable moodverifiedMay 18, 2026
Ill LucknounMWEan unfortunate state resulting from unfavorable outcomesverifiedMay 18, 2026
Ill NaturenounMWEa disagreeable, irritable, or malevolent dispositionverifiedMay 18, 2026
Ill ServicenounMWEan act intended to help that turns out badlyverifiedMay 18, 2026
Ill TempernounMWEa persisting angry moodverifiedMay 18, 2026
Ill TurnnounMWEan act intended to help that turns out badlyverifiedMay 18, 2026
Ill WillnounMWEa hostile (very unfriendly) dispositionverifiedMay 18, 2026
Ill-Beingnounlack of prosperity or happiness or healthverifiedMay 18, 2026
Ill-Breedingnounimpoliteness resulting from ignoranceverifiedMay 18, 2026
Ill-Treatmentnouncruel or inhumane treatmentverifiedMay 18, 2026
Ill-Usagenouncruel or inhumane treatmentverifiedMay 18, 2026
Illationnounthe reasoning involved in drawing a conclusion or making a logical judgment on the basis of circumstantial evidence and prior conclusions rather than on the basis of direct observationverifiedMay 18, 2026
Illegal PossessionnounMWEpossession of controlled substancesverifiedMay 18, 2026
Illegalitynoununlawfulness by virtue of violating some legal statuteverifiedMay 18, 2026
Illegibilitynounthe quality of writing (print or handwriting) that cannot be decipheredverifiedMay 18, 2026
Illegitimacynoununlawfulness by virtue of not being authorized by or in accordance with lawverifiedMay 18, 2026
Illegitimate ChildnounMWEthe illegitimate offspring of unmarried parentsverifiedMay 18, 2026
Illegitimate EnterprisenounMWEan illegal enterprise (such as extortion or fraud or drug peddling or prostitution) carried on for profitverifiedMay 18, 2026
Illiberalitynouna disposition not to be liberal (generous) with moneyverifiedMay 18, 2026
Illicitnessnounthe quality of not conforming strictly to lawverifiedMay 18, 2026
Illiteracynounignorance resulting from not readingverifiedMay 18, 2026
Illiterate PersonnounMWEa person unable to readverifiedMay 18, 2026
Illnessnounimpairment of normal physiological function affecting part or all of an organismverifiedMay 18, 2026
Illogicnouninvalid or incorrect reasoningverifiedMay 18, 2026
Illogicalitynouninvalid or incorrect reasoningverifiedMay 18, 2026
Illogicalnessnouninvalid or incorrect reasoningverifiedMay 18, 2026
Illuminancenounthe luminous flux incident on a unit areaverifiedMay 18, 2026
Illuminantnounsomething that can serve as a source of lightverifiedMay 18, 2026
Illuminationnounpainting or drawing included in a book, especially referring to illuminated medieval manuscriptsverifiedMay 18, 2026
Illumination UnitnounMWEa measure of illuminationverifiedMay 18, 2026
Illusionnounsomething many people believe that is falseverifiedMay 18, 2026
Illusionistnounsomeone who performs magic tricks to amuse an audienceverifiedMay 18, 2026
Illustrationnouna visual representation (a picture or diagram) that is used make some subject more pleasing or easier to understandverifiedMay 18, 2026
Illustratornounan artist who makes illustrations (for books or magazines or advertisements etc.)verifiedMay 18, 2026
Illustriousnessnounthe property possessed by something or someone of outstanding importance or eminenceverifiedMay 18, 2026
Ilmenitenouna weakly magnetic black mineral found in metamorphic and plutonic rocksverifiedMay 18, 2026
ImagenounAn exact bit-stream copy of all electronic data on a device, performed in a manner that ensures that the information is not altered.ArtifactMay 12, 2026
Image archive (Check 21)nounMWEDatabase for storage and easy retrieval of check images.DataRegulatedPIIMay 9, 2026
Image BreakernounMWEa destroyer of images used in religious worshipverifiedMay 18, 2026
Image capture (Check 21)nounMWEThe process of digitizing both sides of physical items and their assorted MICR information as they are processed at the Federal Reserve Bank. Also includes storage of the images for up to 60 days.ProcessRegulatedPIIMay 12, 2026
Image CompressionnounMWEthe compression of graphics for storage or transmissionverifiedMay 18, 2026
Image exchange (Check 21)nounMWEExchange of some or all of the digitized images of a check.ProcessRegulatedPCIMay 9, 2026
Image OrthiconnounMWEa now obsolete picture pickup tube in a television cameraverifiedMay 18, 2026
Image ScannernounMWEan electronic device that generates a digital representation of an image for data input to a computerverifiedMay 18, 2026
Imagerynounthe ability to form mental images of things or eventsverifiedMay 18, 2026
Imaginary BeingnounMWEa creature of the imaginationverifiedMay 18, 2026
Imaginary CreaturenounMWEa creature of the imaginationverifiedMay 18, 2026
Imaginary NumbernounMWE(mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1verifiedMay 18, 2026
Imaginary PartnounMWEthe part of a complex number that has the square root of -1 as a factorverifiedMay 18, 2026
Imaginary Part of a Complex NumbernounMWEthe part of a complex number that has the square root of -1 as a factorverifiedMay 18, 2026
Imaginary PlacenounMWEa place that exists only in imaginationverifiedMay 18, 2026
Imaginationnounthe formation of a mental image of something that is not perceived as real and is not present to the sensesverifiedMay 18, 2026
Imaginative ComparisonnounMWEthe kind of mental comparison that is expressed in similes or metaphors or allegoriesverifiedMay 18, 2026
Imaginativenessnounthe formation of a mental image of something that is not perceived as real and is not present to the sensesverifiedMay 18, 2026
ImagingnounA process that allows one to obtain a bit-for-bit copy of data to avoid damage of original data or information when multiple analyses may be performed. Scope Note: The imaging process is made to obtain residual data, such as deleted files, fragments of deleted files and other information present, from the disk for analysis. This is possible because imaging duplicates the disk surface, sector by sector.ProcessMay 12, 2026
Imagismnouna movement by American and English poets early in the 20th century in reaction to Victorian sentimentalityverifiedMay 18, 2026
Imagonoun(psychoanalysis) an idealized image of someone (usually a parent) formed in childhoodverifiedMay 18, 2026
Imamnoun(Islam) the man who leads prayers in a mosqueverifiedMay 18, 2026
Imaretnouna hostel for pilgrims in TurkeyverifiedMay 18, 2026