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Large number that has yet to be invented.
Fry: One JILLION dollars.
Audience: *Gasp*
Auctioneer: Sir, that's not even a number.
by Poor boy from a poor family November 28, 2003
An imaginary word that is meant to describe a number far beyond comprehension.
Angela's dad has a jillion dollars, that rich bastard.
by Chris October 01, 2003