1. the number that is represented as a one followed by 18 zeros; - Example: "in England they call a quintillion a trillion" [syn: trillion, one million million million]
WordNet (r) 3.0 (2006):
one million million million
n 1: the number that is represented as a one followed by 18
zeros; "in England they call a quintillion a trillion"
[syn: trillion, one million million million]