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

Conservatives have cast it as a chance for Trump's supporters to back him once again, while Democrats are seeking to channel voter anger over billionaire Elon Musk, who is leading the administration's efforts to slash spending and the size of government. —Ron Estes, MSNBC Newsweek, 31 Mar. 2025

Money is pouring in from around the country, with millions of dollars in support of the conservative candidate coming from billionaire Elon Musk, who visited the state Sunday night for a rally donning a cheesehead hat. —The Npr Network, NPR, 31 Mar. 2025

An overnight fire at a Tesla dealership in Rome that destroyed 17 cars was an act of terrorism, the company's billionaire owner Elon Musk said on Monday. —USA Today, 31 Mar. 2025

Groups affiliated with Elon Musk, President Donald Trump's closest adviser and the billionaire owner of Tesla, have spent almost $20 million in the race supporting Schimel. —Oren Oppenheim, ABC News, 31 Mar. 2025

Word History

Etymology

billion + -aire (as in millionaire)

First Known Use

1844, 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