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2.
A large number more than a million less than googleplex.
by Jim Bob July 24, 2003
 
1.
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
 
3.
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