Trillion :  adj
1: one quintillion in Great Britain [syn: a trillion]
2: one million million in the United States [syn: a trillion] (noun)
1: the number that is represented as a one followed by 18 zeros; "in England they call a quintillion a trillion" [syn: one million million million]
2: the number that is represented as a one followed by 12 zeros; "in England they call a trillion a billion" [syn: one million million, 1000000000000]