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1.
A reasonably attractive female who has studied physics, probably to degree level, in an environment mainly composed of male nerds. The resulting over-exposure to male attention casues annoying traits such as expecting to be the centre of attention at all times, and constantly talking about herself.
The hidden side of the deficit in female physics uncergraduates is the prevalence of physics girl syndrome.
by Elmwood_destroyer_of_words March 25, 2007
 
2.
An intelligent female who has studied physics, most likely in a nerdy, predominantly male environment. She is a nerd herself. She been educated in statistics and has learned very well that the odds may be good, but the goods are odd.
That physics girl is a regular Einstein
by physicsmunchkin December 03, 2010