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

Palisades Village, a luxury outdoor mall owned by billionaire developer Rick Caruso that was saved by private firefighters, will be closed until August. —Los Angeles Times, 12 May 2026

While that’s a tension that has been expected to percolate between the billionaire class and new socialist democratic mayor, real estate sales in the city remain strong. —Trevor Laurence Jockims, CNBC, 12 May 2026

The Aces are owned by billionaire Mark Davis; in 2023, Tom Brady bought a minority stake in the franchise. —Erin Vanderhoof, Vanity Fair, 12 May 2026

Tom Steyer is running for California governor on an affordability agenda, testing voters’ willingness to set aside their aversion to billionaires. —Praveena Somasundaram, Washington Post, 12 May 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