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 Trump administration has targeted USAID as the President Trump and billionaire Elon Musk, the head of the Department of Government Efficiency, or DOGE, seek to cut the size of the federal government. —Aimee Picchi, CBS News, 11 Feb. 2025

Dinklage will portray Leon Prater, a billionaire venture capitalist. —Rosy Cordero, Deadline, 11 Feb. 2025

Lei Jun, founder of Chinese tech giant Xiaomi, is now the fifth richest billionaire in China after company shares rallied 250% over the past 12 months. —Yue Wang, Forbes, 10 Feb. 2025

The minister also spoke about tech billionaire Elon Musk vowing that his Department of Government Efficiency (DOGE) will cut off aid to Lutheran organizations. —Justin Gest, Newsweek, 10 Feb. 2025

Word History

Etymology

billion + -aire (as in millionaire)

First Known Use

1844, in the meaning defined above

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