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2.
Something beyond chill or cool, to the point that it becomes cryogenic
Man that guy I just met is beyond cool, he's cryo.

Want to come over and cryo later?
by pb2193 September 04, 2012
 
1.
Short for Cryogenics. a process which involves the freezing of bodies for later use.
such as medical purposes.
"when should we wake up Tom from CRYO-stasious"
by Cryo March 29, 2004
 
3.
To do a fuckup, also another word for a really really dense person.
Oh dear I panzered my entire team, I think i did a cryo
by pyro August 07, 2003