/ Dictionary / Index I integral function: Meaning and Definition of Find definitions for: in'tegral func'tion Pronunciation: [key] — Math. Math.Chiefly Brit. an entire function. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. integral equation integralism Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language