Top Definition
A unit of counting that equals a billion million.

The cardinal number equal to 1000000 × 1000000000
At the age of 42, I will have a gillion dollars in the bank.
by Geremology May 09, 2005
An unambiguous number that represents a 1 followed by 9 zeros (1,000,000,000). Equivalent to American "Billion" and European "Milliard"
I have a thousand million things to do!" "You mean a gillion things to do!
by Zyxuvius November 12, 2010
The amount of money that anyone named Gil has.
I just got paid today, now I have $700 gillion dollars.
by Gilty30 January 26, 2011
a type of number with 100 zeros
i walke to the milbar and bought a gillion icypoles
by king November 07, 2003
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.