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

Harold Hamm The oil billionaire and Continental Resources founder has been an informal adviser to Trump on energy issues. —Dave Smith, Fortune, 26 Oct. 2025

After Trump spoke to Lurie, local leaders and advocates worried that Trump would shift his attention from San Francisco, which at one point hosted more billionaires than any other city, to less powerful and more diverse enclaves like Oakland and Alameda. —Lia Russell, Sacbee.com, 25 Oct. 2025

Cameron and Tyler Winklevoss The Winklevoss twins became some of the first cryptocurrency billionaires after using a multi-million-dollar legal settlement from Mark Zuckerberg to invest in Bitcoin more than a decade ago. —Melanie Hicken, CNN Money, 24 Oct. 2025

Consuelos, 54, plays billionaire Tripp Houser in the show, who was saved by Hen after he was swallowed by a whale, and in return, sent her and Athena into space. —Julia Moore, PEOPLE, 24 Oct. 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