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or millionnaire

[mil-yuh-nair] /ˌmɪl yəˈnɛər/
a person whose wealth amounts to a million or more in some unit of currency, as dollars.
any very rich person.
Origin of millionaire
1820-30; < French millionnaire, equivalent to million million + -aire -ary
Related forms
millionairedom, noun
nonmillionaire, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for millionnaire
Historical Examples
  • Besides, one had need be a millionnaire to do anything with such a great empty shell.

  • Even if my father were a millionnaire, I couldn't go on living on him.

    Wilfrid Cumbermede George MacDonald
  • There was about five thousand dollars in the bank that day when I went back to the Yards, and I was as proud as a millionnaire.

  • It was easy to see she thought more of the caballero than the millionnaire.

    Roland Cashel Charles James Lever
  • He eyed the sleeping man—surely a monster, a millionnaire, with the tastes of a brute.

    Visionaries James Huneker
  • I have all my life heard of Mr. Sandford as being a millionnaire.

    Mrs. Dorriman, Volume 1 of 3 Julie Bosville Chetwynd
  • Even this millionnaire author was finally reduced to such necessity as obliged him to sell his private pictures for subsistence.

    Genius in Sunshine and Shadow Maturin Murray Ballou
  • The millionnaire believed, of course, Tim had stolen it, and so did the physician.

    The Wood Fire in No. 3 F. Hopkinson Smith
  • Wall Street is the millionnaire's checker-board, but brains direct the moves and make the plays.

    Frenzied Finance Thomas W. Lawson
  • Poor, with no one to assist me but you, I have the tastes and vices of a millionnaire's son.

    File No. 113 Emile Gaboriau
British Dictionary definitions for millionnaire


a person whose assets are worth at least a million of the standard monetary units of his country
Derived Forms
millionairess, millionnairess, noun:feminine
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for millionnaire



1821, from French millionnaire (1762); see million. The first in America is said to have been John Jacob Astor (1763-1848).

Online Etymology Dictionary, © 2010 Douglas Harper
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