Top Definition
A Polygon with an imaginary number of sides. An Imaginary number is the square root of a negative number, so an imagigon has a negative surface area. Warning - trying to visualise this will cause your brain to implode.
A four sided imagigon with sides 2i meters by 2i meters has a surface area of -4 meters. Take that, reality.
by RoboFerret September 19, 2011

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