First Known Use: 1690
Dictionary
trillion
noun tril·lion \ˈtri(l)-yən\
: 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
— see number table
2
: an indeterminately large number <a trillion mosquitoes out tonight>
— trillion adjective
— tril·lionth \-yən(t)th\ adjective or noun
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Origin of TRILLION
French, from tri- + -illion (as in million)
TRILLION Defined for Kids
trillion
noun tril·lion \ˈtril-yən\
Definition of TRILLION for Kids
: a thousand billions
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