<unk>  (also known as lyophilization or cryodessication) is a dehydration process typically used to preserve a perishable material or make the material more convenient for transport.<unk>  works by<unk> ng the material and then reducing the surrounding pressure and adding enough heat to allow the frozen water in the material to sublime directly from the solid phase to gas.
Freeze drying
Sterilization 
Cryogenics
Fermentation 
Cell culture
Chemical peel
Gaslighting
Chemiluminescence