/ Dictionary / Index M multimillionaire: Meaning and Definition of Find definitions for: mul•ti•mil•lion•aire Pronunciation: (mul"tē-mil"yu-nâr', mul"tī-), [key] — n. a person who possesses a fortune that amounts to many millions of dollars, francs, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. multimeter multimodal Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language