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.
Meta, Google, OpenAI, and others are betting that whoever achieves this breakthrough first could dominate markets worth trillions. ArsTechnica, 1 Aug. 2025 If successful, this could dramatically accelerate settlement times, lower capital requirements for traders, and enhance market efficiency, positioning Circle to earn fees on trillions in global equity, bond, and derivatives transactions. Roomy Khan, Forbes.com, 31 July 2025 Musk is seeking to spend trillions—and risk human lives—to demonstrate his own. Franklin Foer, The Atlantic, 28 July 2025 That balance sheet exploded in size during the Great Financial Crisis and COVID-19 pandemic as the Fed bought trillions of dollars of bonds to prop up the economy. Shawn Tully, Fortune, 26 July 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 6 Aug. 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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