Top Definition
When a guy or girl is so hot that they go beyond the basic 1-10 hot scale and need an exponent next to the 10 to judge their attractiveness.
Guy 1: Damn that girl is fine.

Guy 2: I know she's sexponential. She's 10 to the power of 3 at least!
by Tex-Mex Shawn C. October 02, 2010
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