trillionaire

British

/ ˌtrɪljəˈnɛə /

noun

a person whose assets are worth over a trillion of the monetary units of his or her country

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It will also, of course, cement Musk, who is already worth some $817 billion, as history’s first-ever trillionaire.

From Salon • Apr. 4, 2026

The SpaceX share sale could make Musk the world's first trillionaire.

From BBC • Mar. 25, 2026

The technology also is furthering the divide between the haves and have nots, ushering in not just new tech billionaires but, perhaps, even the first trillionaire.

From The Wall Street Journal • Jan. 11, 2026

SpaceX’s planned public debut would also move Musk closer to becoming the first-ever modern trillionaire, thanks to his 42% stake in SpaceX.

From MarketWatch • Dec. 31, 2025

An equivalent number of American pennies would be enough to make every person on Earth a dollar trillionaire.

From "A Short History of Nearly Everything" by Bill Bryson

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023