cry·o·gen·ic I. \|krīō|jenik\adjective Etymology:cry- + -genic : of or relating to the production of very low temperatures II. adjective 1.: being or relating to a very low temperature < a cryogenic temperature of -50° C > 2. a.: requiring or involving the use of a cryogenic temperature < cryogenic surgery > b.: requiring cryogenic storage c.: suitable for the storage of a cryogenic substance < a cryogenic container > • cry·o·gen·i·cal·ly\-nə̇k(ə)lē\adverb