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 electric vehicle maker, which is headed by billionaire Elon Musk, plans to deploy a free software update to the affected vehicles in June. —Khristopher J. Brooks, CBS News, 31 May 2024

Tesla, which is headed by billionaire Elon Musk, plans to start deploying an over-the-air software update to the affected vehicles free of charge in June. —Amanda Gerut, Fortune, 31 May 2024

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