/ Dictionary / Index M mixed number: Meaning and Definition of Find definitions for: mixed' num'ber Pronunciation: [key] a number consisting of a whole number and a fraction or decimal, as 4 or 4.5. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mixed nerve mixed-up Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language