1 definition by YattonMan

Top Definition
A non-sexual relationship between a man and a woman that could /should only work in outer space.
After mastering artificial gravity, faster-than-light travel, and building this colony on Pluto, it's really easy to just be friends with hot chicks in a totally plutonic way.

Honestly, baby, I'm not cheating, me and Jennika are just plutonic friends!
by YattonMan March 25, 2008

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