trillionaire

noun

tril·​lion·​aire ˌtri(l)-yə-ˈner 

ˈtri(l)-yə-ˌner

plural trillionaires

: a person whose wealth is estimated at a trillion or more dollars, pounds, or other monetary units

Many of us feel our e-mail inboxes are overflowing with spam, bad jokes and ridiculous offers about how to become trillionaires.

—Suzanne Choney

On the surface, Mr. Son—who is one of Japan's richest men but is often described as modest—and Mr. Neumann, who has said he wants to become the world's first trillionaire and "president of the world," couldn't have been more different.

—Amy Chozick

Examples of trillionaire in a Sentence

Recent Examples on the Web

But even as the world's first trillionaire and India's second-richest businessman contest to provide internet to the remote areas of India, some experts are not convinced Jio Platforms has enough to be defined as a tech company. — Priyanka Salve, CNBC, 15 Oct. 2026

The Supreme Court agreed Tuesday to hear arguments in a watchdog’s lawsuit seeking public records about trillionaire Elon Musk’s Department of Government Efficiency. — Michael Kunzelman, Los Angeles Times, 13 Oct. 2026

The trillionaire has reportedly not yet seen the film and did not respond to a request for comment from The Associated Press. — ABC News, 12 Oct. 2026

Tech trillionaire Elon Musk gave $276 million to several Republican super PACs and organizations over the past three months, as the GOP faces headwinds ahead of the midterm elections. — Miranda Nazzaro, The Hill, 12 Oct. 2026

Word History

Etymology

trillion + -aire (in millionaire)

First Known Use

1861, in the meaning defined above