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

Even for a billionaire who was in the comparatively low-budget dictionary business less for profit than for fun, the bottom line mattered, and the pressure to make money and cut costs was inescapable. —Stefan Fatsis, The Atlantic, 13 Sep. 2025

In doing so, Martin implicated billionaire bankers, major American corporations, and Colombia’s political elite. —Martin Suarez, Rolling Stone, 13 Sep. 2025

His father, Robert Kraft, billionaire owner of the New England Patriots, should have told him that. —Peter Lucas, Boston Herald, 13 Sep. 2025

Another billionaire, former Google chief executive Eric Schmidt, who recently purchased his own rocket company, has been quietly propping up the idea that data centers should be moved off Earth. —Jackie Wattles, CNN Money, 12 Sep. 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