definitions

trillion

[ tril-yuh n ]
/ ˈtrɪl yən /
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SEE MORE SYNONYMS FOR trillion ON THESAURUS.COM

noun, plural tril·lions, (as after a numeral) tril·lion.

a cardinal number represented in the U.S. by 1 followed by 12 zeros, and in Great Britain by 1 followed by 18 zeros.

adjective

amounting to one trillion in number.

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RELATED WORDS

profusion, gathering, stockpile, scad, cluster, fullness, jumble, total, mint, bunch, mountain, congeries, lots, sum, much, hill, hoard, ream, agglomeration, cargo

Nearby words

triliteral, triliteralism, trilithon, trill, trilling, trillion, trillionaire, trillium, trilobate, trilobed, trilobite

Origin of trillion

1680–90; < French, equivalent to tr(i)- tri- + (m)illion million

Related forms

tril·lionth, noun, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for trillion

British Dictionary definitions for trillion

trillion

/ (ˈtrɪljən) /

noun

the number represented as one followed by twelve zeros (10 12); a million million
(formerly, in Britain) the number represented as one followed by eighteen zeros (10 18); a million million million
(often plural) an exceptionally large but unspecified number

determiner

(preceded by a or a numeral)
  1. amounting to a trilliona trillion stars
  2. (as pronoun)there are three trillion

Derived Forms

trillionth, noun, adjective

Word Origin for trillion

C17: from French, on the model of million
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012