Top Definition
Like or similar to Neo.
*dodges a bullet* Woah! Totally Neosis man!
Damn you and your neosis!
by Didget September 10, 2005
1 more definition
6 Words related to Neosis
A medical condition when your ego inflates and you start to believe you're better than everyone else.

Taken from the term Neon, a person whom has had Neosis since birth.
"Bad news guys, I've come down with a case of Neosis. I'm just so glad I'm better than everyone else with Neosis."
by Strafeous October 30, 2011

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