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1.
When a teacher is explaining complex maths and then suddenly comes up with an answer
Stoner 1: "How did Sir do that?"
Stoner 2: "That shit was mathemagical."
by xhenersx January 06, 2013
 
2.
/máthimájikal/ adj. of or pertaining to or of the nature of a phenomenon that which can only be explained by a combination of mathematics and supernatural theory. Most commonly occurring in card games, such as euchre, poker, go-fish...etc.
Now fucking way, that was a mathemagical card on the river!
She had a mathemagical draw to win the go-fish game.
by Smitty369 August 30, 2010