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

Musk’s apparent pivot to focusing on the moon comes as the tech billionaire – whose companies receive huge government contracts – has taken a far more vocal stance on politics than in years past. —Jackie Wattles, CNN Money, 9 Feb. 2026

Utemuratov, the Kazakh billionaire who has used his wealth to try to turn the country into a force in tennis, has spent much of the past two decades funding the construction of tennis centers. —James Hansen, New York Times, 9 Feb. 2026

Meanwhile, authorities have yet to restore full access to the social media platform X, which Maduro blocked after its billionaire owner, Elon Musk, accused him of stealing the 2024 vote. —Egina Garcia Cano, Arkansas Online, 8 Feb. 2026

Every tech startup in the Valley seems to be hosting a party, happy hour, or concert; VIP suites are filling up with executives; and the billionaires are already posting Super Bowl selfies. —Julia Black, Vanity Fair, 8 Feb. 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