A large, undefined number. Could refer to several, or a massive amount. Used in extreme over-exaggeration for humorous or emphatic purposes
Me: there's like a gajillion stars, we're so infintesimal.
Friend: dude, infintesimal isn't a word
Me: yuh huh. *nods*
Friend: STFU and pass the pipe PLZTHX
by aerodrown August 30, 2005
A large number more than a million less than googleplex.
by Jim Bob July 24, 2003
The amount of money (in dollars) that Zack owes Nilan, because Zack bet that the radius of convergence was 1/2, when it was really 2. Zack then tried to bet on a coin flip to win his gajillion back, but instead just lost another gajillion.
I now have two gajillion dollars, courtesy of Zack.
by Nilan April 26, 2006

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