Top Definition
Two lines that are both parallel and perpendicular at the same time. Completely mindblowing
crazy math teacher: these two lines are parapendicular

student: bitch, is that even possible?!
by the POPOlice November 05, 2008
Giving the illusion of being perpendicular.
Joe made a mistake of assuming the parapendicular lines were in fact perpendicular, causing him to only earn a C- on his geometry exam.
by Ladderwalker February 03, 2009

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