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1.
A contraction of the words pregnant and anorexic referring to:

1 A woman that, despite being several months into pregnancy has not gained any wieght.

2 A condition usually experienced by slim women who refuse to eat in order to hide being pregnant for as long as possible.
Girl 1 : "Jen is 7 months pregnant and she doesn't even show yet!"
Giel 2 : "No kidding, she's pregnorexic. I mean, she acutally lost 10 pounds!"
by Nullpersona January 06, 2008