Top Definition
Relating to the underworld or the god Pluto. Common misspelling of the word platonic, meaning intimate and affectionate but not sexual.
Everyone thinks that we're dating, but our relationship is strictly plutonic.

Um, I think you mean platonic.
by chalima March 09, 2009
A pun that indicates a relationship that is not only not platonic, but explosive.
We used to platonic friends, but after last night, its plutonic.
by ntsci September 17, 2012
a friendship or relationship in which there is no possibility of romantic progress.
"I like you, but only as a friend."

that's some plutonic shit right there.
by t2d.curious November 03, 2007
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
Adj: A one-sided relationship that not only fails to ever get romantic, but that manages to get you publicly humiliated in front of your peers when the object of your affections openly dates someone else.

from: "platonic" and the demotion of Pluto to dwarf planet status.
student 1: Hey, WTF? Isn't that your girlfriend smooching with the captain of the football team?

student 2: Yes, Betty and I have a plutonic relationship. She respects my mind.

student 1: Sure, you sorry-ass loser!
by KatieOh! September 12, 2006
A relationship that was formerly sexual in nature, but has been demoted to "just friends."
I used to be all over her beef-curtains, but then our relationship went plutonic.
by cactustime November 15, 2009
A penatration-based sex act so warped and craven that it is "of Pluto", i.e. beyond anal. Although "plutonic" does not refer to any specific act, it could include such acts as ear sex, removing someone's glass eye and having sex with the empty eyesocket, sex with a colostomy stoma, an esophagal stoma, or stab wound.
John and Kim's relationship progressed quickly - on Wednesday they were platonic friends, on Thursday afternoon they were fucking, and by Sunday they started getting into some plutonic shit.
by Johnny Panic February 19, 2008
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