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.
As trillions of dollars shift into women’s hands over the next decade, the financial industry is being forced to evolve. Melissa Houston, Forbes.com, 27 May 2026 Cloud computing was also a massive technological shift, one that created trillions of dollars in market capitalization for its providers. Gil Mandelzis, Fortune, 27 May 2026 El Niños can also be incredibly costly, having the potential to cause trillions of dollars in economic damage worldwide. Abigail Adams, PEOPLE, 19 May 2026 Together, these chips deliver 3,000 TOPS (trillions of operations per second) of on-chip computing power. Mrigakshi Dixit, Interesting Engineering, 19 May 2026 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 28 May. 2026.

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

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