noun Informal.
- an extremely large, indeterminate number.
noun plural -lions or -lion
- (often pl) an extremely large but unspecified number, quantity, or amountgazillions of people turned up
determiner
-
- amounting to a gazilliona gazillion types to choose from
- (as pronoun)I found a gazillion under the sink
by 1984, with made-up prefix and ending from billion, trillion, etc.