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1. To prevent a friend (male or female) or associate from attending a physics symposium.

2. Any such attempt to prevent a friend or associate from going to a physics symposium.
1. Damn, Johnny just totally quarkblocked his roommate. Ass.

2. OK, Isaac's headed toward the door with some notes on particle physics and our Halo scrim is on in fifteen minutes. We're going to have to attempt a quarkblock.
by marblewonder January 28, 2009
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The geeks' version of cock block. Quark Block is where your friend prevents you from a geeky act that he wanted to take.

Wu Ping: Hey why didn't you tell me about that physics seminar Steven Hawkins was delivering in town yesterday?

Matt: Ooops.... guess I forgot.

Wu Ping: expect me to believe that? You totally quark blocked me and went for it by yourself.
by tastelikecrab February 15, 2009
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