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

Watching Silicon Valley mint billionaires who were born around the time Facebook launched is a spectacle. —Lila Shroff, The Atlantic, 20 Dec. 2025

The appearance quickly drew attention beyond China, including from billionaire Elon Musk, who reshared a post on X stating that robots in China are now doing everything, even dancing on stage like professionals. —Bojan Stojkovski, Interesting Engineering, 20 Dec. 2025

Our collective efforts were failing as residents battled billionaires and the politicians gorging on them. —Josh Peter, USA Today, 20 Dec. 2025

Jared Isaacman, the billionaire tech entrepreneur who this week was sworn in as the next administrator of NASA, praised the mission. —Jackie Wattles, CNN Money, 20 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