- a cardinal number represented in the U.S. by 1 followed by 15 zeros, and in Great Britain by 1 followed by 24 zeros.
- amounting to one quadrillion in number.
- (in Britain) the number represented as one followed by 24 zeros (10 24)
- (in the US and Canada) the number represented as one followed by 15 zeros (10 15)
- amounting to this number
- (as pronoun)
