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

The surrounding area has also become increasingly popular among billionaires, and in nearby Palm Beach, security has become part of the draw. — Sydney Lake, Fortune, 8 Oct. 2026

Opponents include Google co-founder Sergey Brin, who had dumped more than $100 million into the effort as of early August, with a long list of other tech billionaires chipping in as well. — Jack Dolan, Los Angeles Times, 7 Oct. 2026

In Social Network, Zuckerberg was a kid who backstabbed his way into billionaire status with the discovery of Facebook. — Pete Hammond, Deadline, 7 Oct. 2026

What all three films have in common, aside from various intersections and overlaps in their stories, is their repositioning of tech billionaires as the new screen villains. — David Rooney, HollywoodReporter, 7 Oct. 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