The approximately hemispherical region above the ground that forms around a person after they pass gas.

Pronounced Co-Lahn-iss-fear
"Hey, want some more broccoli?"
:Pffffft:
"Uh, no. That's okay. I'm trying to stay out of your colonisphere."
"Yeah, sorry about that."
by Sarginitial January 15, 2019
Get the Colonisphere mug.