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trillion

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noun tril·lion \ˈtri(l)-yən\

Simple Definition of trillion

  • : the number 1,000,000,000,000 : one thousand billion

  • : a very large amount or number

  • : the number 1,000,000,000,000,000,000 : one million million million

Full Definition of trillion

  1. 1 — see number table

  2. 2 :  an indeterminately large number <a trillion mosquitoes out tonight>

trillion adjective
tril·lionth play \-yən(t)th\ adjective or noun

Origin of trillion

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


First Known Use: 1690

Rhymes with trillion



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