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 54-year-old actress was spotted kissing billionaire Peter Morton, 78, during a rare night out in Beverly Hills. —Stephanie Giang-Paunon, FOXNews.com, 6 Dec. 2025

This week alone, several higher education institutions announced major gifts from the billionaire philanthropist and ex-wife of Amazon founder Jeff Bezos—donations totaling well over $100 million. —Sydney Lake, Fortune, 5 Dec. 2025

Beeple has explained that the project reflects his concern about how billionaires, platforms, and emerging AI systems subtly influence the way people understand reality, often shaping public perception more than traditional art or journalism ever could. —Prabhat Ranjan Mishra, Interesting Engineering, 5 Dec. 2025

This donation is part of a series of multimillion-dollar unrestricted donations to historically Black colleges and universities across the country from the billionaire philanthropist. —Frederick Sutton Sinclair, CBS News, 5 Dec. 2025

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