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1.
A combination of the words 'tangent' and 'perpendicular'.
Synonyms: normal (in math calculus)
Noun: A straight line which is perpendicular to a tangent.
Adjective: A word to describe a line which is perpendicular to another line (usually a tangent)
Noun: 'That line is a tangendicular to that other line'
Adjective: 'Hey, that line's a bit tangendicular'
by Team-Rocket March 07, 2010