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trillion

noun

tril·​lion ˈtri(l)-yən How to pronounce trillion (audio)
Synonyms of trillionnext
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.
By 2010, the International Telecommunications Union reported trillions of messages sent yearly, turning SMS into a global cultural habit that shaped abbreviations like LOL and BRB. Aamir Khollam, Interesting Engineering, 3 Dec. 2025 And yet the majority of institutional investors continue to ignore the smart money, instead pouring trillions through the same old-school, closed-door networks. Rochelle Witharana, Fortune, 2 Dec. 2025 There were financial institutions that were going to mobilize trillions of dollars. Jeff Young, MSNBC Newsweek, 28 Nov. 2025 Think of your gut as an ecosystem with a large community of trillions of microorganisms. Caitlin Pagán, Verywell Health, 24 Nov. 2025 See All Example Sentences for trillion

Word History

Etymology

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

First Known Use

1745, in the meaning defined at sense 2

Time Traveler
The first known use of trillion was in 1745

Browse Nearby Words

Cite this Entry

“Trillion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/trillion. Accessed 5 Dec. 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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