/ Dictionary / Index I infinity: Meaning and Definition of Find definitions for: in•fin•i•ty Pronunciation: (in-fin'i-tē), [key] — pl. -ties. the quality or state of being infinite. something that is infinite. infinite space, time, or quantity. an infinite extent, amount, or number. an indefinitely great amount or number. the assumed limit of a sequence, series, etc., that increases without bound. infinite distance or an infinitely distant part of space. a distance between a subject and the camera so great that rays of light reflected from the subject may be regarded as parallel. a distance setting of the camera lens beyond which everything is in focus. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: infinity (Thesaurus) infinitude infirm Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language