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.
Together, these chips deliver 3,000 TOPS (trillions of operations per second) of on-chip computing power. Mrigakshi Dixit, Interesting Engineering, 19 May 2026 And fiber is also the primary fuel source for the trillions of microbes that live in your gut and influence many aspects of health - from your immune system to mood, notes Holscher, whose research focuses on the microbiome. Maria Godoy, NPR, 18 May 2026 In an age when companies spend trillions on transformation programs only to see most of them fail, two Amazon Web Services veterans have written what may be the most stimulating management book of 2026. Steve Denning, Forbes.com, 17 May 2026 With half the nation posing financial questions to AI, trillions of dollars in savings and investments could ride on the answers. Daniel De Visé, USA Today, 15 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 22 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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