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

The accounts already have gotten a boost from billionaires beyond the $1,000 from the government. — Moriah Balingit, Los Angeles Times, 2 July 2026

Just last month, billionaire Peter Thiel set a new record for the most expensive office lease in Miami by leasing space in the 830 Brickell office tower for around $250 per square foot, Bloomberg reported. — Catherine Odom, Miami Herald, 2 July 2026

How will the billionaire singer and millionaire football star divide their assets? — Grey Battle, Washington Post, 2 July 2026

As for the world's billionaires, their collective net worth surged by nearly 25% in the year ended in April, according to UBS. — Hayley Cuccinello, CNBC, 2 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