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

Despite high-profile billionaire departures and complaints about costs, California is pulling in more than $335 billion in venture capital — about ten times New York — fueled by an AI boom. — Los Angeles Times, 10 July 2026

The hedge fund billionaire has previously talked about having dinner at a table with a full roster of CEOs. — Nick Lichtenberg, Fortune, 9 July 2026

Any shift in billionaires’ fortunes would greatly affect the whole state economy. — Fatima Corona, Mercury News, 9 July 2026

Despite inviting over 1,000 people to her high-profile wedding with Kansas City Chiefs player Travis Kelce, billionaire pop star Taylor Swift snubbed several important people in her life. — Allison Degrushe, StyleCaster, 9 July 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