Top Definition
a very large number: 1000000000000000000000000000000000. used when wanting to sound smart.
Man: your ass got a vigintillion gallons
woman: um... thanks?
by Madamerouge1331 May 23, 2011
Noun. 10^63. Also means "idiot" "moron" or as an adjective, it's synonymous with "gay" or "retarded". Also, it can be used as an interjection, such as "Vigintillion!"
"That's pretty vigintillion, dude."(Adjective)
"You're a vigintillion."(Noun)
by The Legendary Tenor August 31, 2003
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