billionaire

noun

bil·​lion·​aire ˌbi(l)-yə-ˈner 

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

But tensions are rising in their own town as some of the billionaires are being too public, including by appearing on Joe Rogan’s podcast. — Payton Turkeltaub, Variety, 1 Oct. 2026

That’s not a typo—$3 billion is indeed the sum that billionaire collector Ken Griffin donated to Carnegie Mellon University in Pittsburgh. — Maximilíano Durón, ARTnews.com, 1 Oct. 2026

The absurdist look at greed and climate change, reality and the distorting power of media, feckless world leaders and rapacious billionaires, struggled to get off the ground. — Brent Lang, IndieWire, 30 Sep. 2026

The 32-year-old athlete is the daughter of Terry and Kim Pegula, the billionaire owners behind the NFL’s Buffalo Bills and the NHL’s Buffalo Sabres. — Jessica Golden,alex Sherman, CNBC, 30 Sep. 2026

Word History

Etymology

billion + -aire (as in millionaire)

First Known Use

1841, in the meaning defined above

Rhymes for billionaire

• aftercare
• anywhere
• chinaware
• debonair
• dinnerware
• disrepair
• doctrinaire
• earthenware
• everywhere
• frigidaire
• kitchenware
• legionnaire

Kids Definition

billionaire

noun

bil·​lion·​aire ˌbil-yə-ˈna(ə)r 

-ˈne(ə)r;

ˈbil-yə-ˌna(ə)r, 

-ˌne(ə)r

: one whose wealth is a billion dollars or more