billionaire

noun

bil·​lion·​aire ˌbi(l)-yə-ˈner How to pronounce billionaire (audio)
ˈbi(l)-yə-ˌner
: 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.
Howery, who still needs the US Senate to confirm his position as ambassador to Denmark, is reportedly a long-time friend of billionaire Elon Musk and formerly founded a venture capital firm with Thiel. Mack Degeurin, Popular Science, 10 Apr. 2025 Wealthy Trump donors and business leaders, including hedge fund manager Bill Ackman, Home Depot co-founder Ken Langone and billionaire investor Leon Cooperman have weighed in with hefty criticism of Trump’s tariffs. Ari Levy, CNBC, 9 Apr. 2025 As tech billionaire Elon Musk’s Department of Government Efficiency (DOGE) sought to gain access to the IRS information, a veteran IRS employee, acting commissioner Douglas O’Donnell, announced his retirement earlier this year. Lauren Irwin, The Hill, 9 Apr. 2025 The firings were part of a broader effort by Trump and billionaire Elon Musk to drastically shrink the federal bureaucracy and slash government spending, which has invited a series of legal challenges. Daniel Wiessner, USA Today, 9 Apr. 2025 See All Example Sentences for billionaire

Word History

Etymology

billion + -aire (as in millionaire)

First Known Use

1844, in the meaning defined above

Time Traveler
The first known use of billionaire was in 1844

Browse Nearby Words

Cite this Entry

“Billionaire.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/billionaire. Accessed 16 Apr. 2025.

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

More from Merriam-Webster on billionaire

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