/ Dictionary / Index I indefinite integral: Meaning and Definition of Find definitions for: indef'inite in'tegral Pronunciation: [key] — Math. Math. a representation, usually in symbolic form, of any function whose derivative is a given function. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. indefinite article indefinite pronoun Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language