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

Think of it as concert merch for billionaires — if your idea of a band tee involves authentication and a custom frame. —Benjamin Svetkey, HollywoodReporter, 3 May 2025

In the nearly two months since former Google chief executive Eric Schmidt acquired Relativity Space, the billionaire has not said much publicly about his plans for the launch company. —Eric Berger, ArsTechnica, 2 May 2025

In contrast, Trump, who Forbes estimates has a net worth hovering around $5 billion, has surrounded himself with other billionaires, appointing several of them to the wealthiest presidential cabinet in U.S. history. —Rachel Barber, USA Today, 2 May 2025

For one thing, job cuts orders by the billionaire’s DOGE are still being challenged in court. —Paul Wiseman, Los Angeles Times, 2 May 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