Etymology
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refrigeration (n.)

late 15c., refrigeracion, "act of cooling or freezing," originally in alchemy, from Latin refrigerationem (nominative refrigeratio) "a cooling, mitigation of heat," especially in sickness, noun of action from past participle stem of refrigerare "to cool down," from re- "back, again" (see re-) + frigerare "make cool," from frigus (genitive frigoris) "cold" (see frigid). Specifically "freezing provisions as a means of preserving them" by 1881.

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Definitions of refrigeration

refrigeration (n.)
the process of cooling or freezing (e.g., food) for preservative purposes;
Synonyms: infrigidation
refrigeration (n.)
deliberately lowering the body's temperature for therapeutic purposes;
refrigeration by immersing the patient's body in a cold bath
From wordnet.princeton.edu