- a cardinal number represented in the U.S. by 1 followed by 12 zeros, and in Great Britain by 1 followed by 18 zeros.
- amounting to one trillion in number.
- 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
- an exceptionally large but unspecified number
- (preceded by a or a numeral)
- amounting to a trillion
- (as pronoun)
