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[mil-yuh-nair-is] /ˌmɪl yəˈnɛər ɪs/
a woman who is a millionaire.
the wife of a millionaire.
Origin of millionairess
First recorded in 1880-85; millionaire + -ess
Usage note
See -ess. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for millionairess
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Historical Examples
  • "She is a splendid match, a millionairess," said Peronskaya.

    War and Peace Leo Tolstoy
  • Not to meet some American millionairess who would be smitten with him and his titles!

    Luna Benamor Vicente Blasco Ibez
  • "You might call her a millionairess, in fact," chuckled Gipsy.

  • Well,” said Tom, “for the first effort of a millionairess, I should say it was.

  • They ain't like yours, but it won't do fer you to go dressed like a millionairess.

    Exit Betty

    Grace Livingston Hill
  • What did money matter, when it came to ordering an outfit for a millionairess?

    Miss Million's Maid Bertha Ruck
  • It is not enough for her to be a Ladyship and a millionairess.

    The Motor Maid

    Alice Muriel Williamson and Charles Norris Williamson
  • That might help me to forget, for an hour or so, the troubles and trials of being the lady's-maid to a millionairess.

    Miss Million's Maid Bertha Ruck

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