billionaire

noun

bil·​lion·​aire ˌbi(l)-yə-ˈner How to pronounce billionaire (audio)
ˈbi(l)-yə-ˌner
Synonyms of billionairenext
: one whose wealth is estimated at a billion or more dollars, pounds, or other monetary units

Examples of billionaire in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
In the years since, Newsom’s friendship with billionaire Gordon Getty helped grow his wine business, PumpJack Group, into a successful multimillion dollar operation. Ben Paviour, Sacbee.com, 16 June 2026 Rick Jackson, the billionaire healthcare executive who grew up in poverty and spent time in Atlanta's public housing projects, has won the Republican runoff for Georgia governor, CBS News projects. Christopher Harris, CBS News, 16 June 2026 In a world of jaded billionaires, psychiatrist-gurus, bio-hacked tech bros, AI labs and disillusioned teens being optimized in elite private schools, an audacious data-mining CEO (Billy Magnussen) strives to turn insight and influence into profit and power. Rosy Cordero, Deadline, 16 June 2026 Their biggest clash of all is over a ballot measure sponsored by SEIU-UHW that would levy a 5% tax on the wealth of California’s roughly 200 billionaires and devote nearly all of its revenue to propping up health care. Dan Walters, Mercury News, 16 June 2026 See All Example Sentences for billionaire

Word History

Etymology

billion + -aire (as in millionaire)

First Known Use

1841, in the meaning defined above

Time Traveler
The first known use of billionaire was in 1841

Browse Nearby Words

Cite this Entry

“Billionaire.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/billionaire. Accessed 19 Jun. 2026.

Kids Definition

billionaire

noun
bil·​lion·​aire ˌbil-yə-ˈna(ə)r How to pronounce billionaire (audio)
-ˈne(ə)r;
ˈbil-yə-ˌna(ə)r
-ˌne(ə)r
: one whose wealth is a billion dollars or more

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