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# trillion

1680s, from French trillion, from Italian trilione; see tri- + million. In the U.S., the fourth power of a thousand (one thousand billion, 1 followed by 12 zeroes); in Great Britain, the third power of a million (one million billion, 1 followed by 18 zeroes), which is the original sense. Compare billion.

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Definitions of

*trillion*### Dictionary entries near *trillion*

trilateral

trilby

trilemma

trilingual

trill

trillion

trillionth

trillium

trilobite

trilogy

trim