Top definition
1. A rediculously large number, generally used to exagerate the amount of money.

2. Could be defined as four times a zillion. A zillion comes after a trillion. So one quadzillion should be 4,000,000,000,000,000.
The United States has a national debt of like quadzillion. (Which isn't far from the truth really).
by jwivdingo May 25, 2011
Get the mug
Get a Quadzillion mug for your father G√ľnter.