trillion

noun

tril·​lion ˈtri(l)-yən How to pronounce trillion (audio)
1
: a number equal to 1,000 times one billion see Table of Numbers
2
: an indeterminately large number
a trillion mosquitoes out tonight
trillion adjective
trillionth adjective or noun

Examples of trillion in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Lamont noted the recent losses of trillions of dollars in the stock market, even after Trump’s 90-day pause on his tariffs generated a huge, one-day spike in stock prices before falling back and up again in some of the most volatile days in stock market history. Christopher Keating, Hartford Courant, 13 Apr. 2025 All of that chaos, trillions of dollars evaporated—for nothing at all. Raja Krishnamoorthi, MSNBC Newsweek, 9 Apr. 2025 But in the days that followed, markets slumped and trillions of dollars were lost in retirement and college savings accounts. Alexandra Hutzler, ABC News, 9 Apr. 2025 The move resulted in trillions in gains in stock market value in a matter of minutes. Peter Suciu, Forbes.com, 8 Apr. 2025 See All Example Sentences for trillion

Word History

Etymology

French, from tri- + -illion (as in million)

First Known Use

1690, in the meaning defined at sense 1

Time Traveler
The first known use of trillion was in 1690

Browse Nearby Words

Cite this Entry

“Trillion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/trillion. Accessed 21 Apr. 2025.

Kids Definition

trillion

noun
tril·​lion ˈtril-yən How to pronounce trillion (audio)
1
: a number equal to 1,000 times one billion see number
2
: a very large number
a trillion mosquitoes out tonight
trillion adjective
trillionth adjective
trillionth noun

More from Merriam-Webster on trillion

Last Updated: - Updated example sentences
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