Cryogenics is a branch of physics dealing with the production and effects of very low temperatures.
Cryogenic suspension is form of stasis induced by exposure to low temperatures within a cryogenic chamber of some kind.
Iron Man's enemy, Blizzard, had a suit that allowed him to flash freeze people or objects.
Kingpin had Spencer Smythe placed in a cryogenic suspension inside a cryogenic chamber shortly after the explosion at OsCorp.
The Soviet Union kept Omega Red in cryogenic suspension.
According to Prowler, Iceberg's genes were experimented on causing his skin to turn blue and to where he could only survive in temperatures below zero.