Top Definition
A button on the graphing calculator. The 'o' isn't actually an o, it's some kind of greek letter that looks like an o with a line through it. People say it's used for entering variables, but it really sends a signal to the alien Xton who will come and dominate our civilization in the year 3496
I just pressed the xton button. Your descendents will all be slaves
by Bob882 November 17, 2004

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