/ Dictionary / Index C composite number: Meaning and Definition of Find definitions for: compos'ite num'ber Pronunciation: [key] — Math. Math. a number that is a multiple of at least two numbers other than itself and 1. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. composite function composite photograph Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language