Source : Webster's Revised Unabridged Dictionary (1913)

Refrigeration \Re*frig`er*a"tion\ (-?"sh?n), n. [Cf. F.
   r['e]frig['e]ration, L. refrigeratio.]
   The act or process of refrigerating or cooling, or the state
   of being cooled.

Source : WordNet®

refrigeration
     n 1: the process of cooling or freezing (e.g., food) for
          preservative purposes [syn: {infrigidation}]
     2: deliberately lowering the body's temperature for therapeutic
        purposes; "refrigeration by immersing the patient's body
        in a cold bath"