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The largest number ever other than infinity.

used to describe something in an insane amount.

theres no 2 fabillion or 3 fabillion just a fabillion.
you: how much did that car cost?
friend: a Fabillion

you:oh
Fabillion by kgun123 October 21, 2011
frillion or f'rillion (fril yen), adj. - 1. A f***ing trillion. 2. A really big number. 3. A quantity so extraordinary as to be considered obscene.

Also - a number with "a lot of zeros".
I can think of a frillion examples.
frillion by kid d December 26, 2007

Fillionite 

A term for fans of the Canadian actor Nathan Fillion who currently stars in the ABC hit TV show Castle as the mystery novelist Richard Castle. Another term would be Fillionaire. Fillion is also known for playing Captain Malcolm "Mal" Reynolds in the sci-fi TV show Firefly and movie Serenity and Captain Hammer in the online web-series Dr. Horrible's Sing-Along Blog. Every Fillionite knows how double rainbow Nathan is and will always support him.
Fillionite by CastleBecks October 30, 2012

gabillion 

A number so immense that it cannot be comprehended with the human mind. So large that the word large doesn't begin to describe it. (Neither does huge, or gigantic. fyi)
No I won't lend you any more money from crack, you already owe me like a gabillion dollars.
gabillion by Senor Sabado April 7, 2005

Nathan Fillion 

I love that hot guy from Firefly and Castle!
It's Nathan Fillion.
Nathan Fillion by PJ630 November 28, 2010
A unit of counting that equals one hundred trillion million billion gillion.
John had worked hard his whole life and had a fillion pounds in the bank.
Fillion by green923jade December 3, 2016