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aka "Polly", a woman who has 2 or more boyfriends at the same time.
Bethany was polyandrous until Eric asked her to marry him.

Barbara was a Polly until Sig found out about Jon.
by Polly Ann Dross March 23, 2009
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Jul 29 Word of the Day
Someone who used to be a potential girlfriend/boyfriend, but no longer is.
Tim: Zack, is that your exgirlfriend?
Zack: No, she's an expotential. We never actually dated...
by brownsuite September 24, 2011
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