Top Definition
A lighthearted term used to offhandedly indicate a large quantity.
"My god, Steve, how many of those cupcakes HAVE you eaten?"
"Hmm... a billionty. Om nom nom nom."
by TheMidnightAce April 26, 2010
exactly how many people are going to Kendra's classy wine and cheese party.
one billionty.. its a word.. at least it will be once i add it to urban dictionary
by Jariinsaurus August 05, 2010
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