Dictionary

billionaire

noun bil·lion·aire \ˌbi(l)-yə-ˈner, ˈbi(l)-yə-ˌ\

: a rich person who has at least a billion dollars, pounds, etc.

Full Definition of BILLIONAIRE

:  one whose wealth is estimated at a billion or more (as of dollars or pounds)

Origin of BILLIONAIRE

billion + -aire (as in millionaire)
First Known Use: 1844

Rhymes with BILLIONAIRE

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