Breadcrumb Home > Dictionary > Index M millionairess: Meaning and Definition of Find definitions for: mil•lion•air•ess Pronunciation: (mil"yu-nâr'is), [key] — n. a woman who is a millionaire. the wife of a millionaire. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: millionairess (Thesaurus) millionaire million electron volts TrendingHere are the facts and trivia that people are buzzing about. The Book of Philippians: Summary Current Events This Week: May 2023 Preamble of the United Nations Charter Queen Victoria Books of the Bible: New Testament Books in Order The 88 Recognized Constellations ✖ Related Content Daily Word Quiz: shanghai Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language