cryogenic (adj.)youdaoicibaDictYouDict[cryogenic 词源字典]
1902, from cryogen "freezing mixture" (1875), from cryo- "freezing" + -genic "having to do with production" (see genus). Related: Cryogenics (1958).[cryogenic etymology, cryogenic origin, 英语词源]
cryonicsyoudaoicibaDictYouDict
"The practice or technique of deep-freezing the bodies of people who have just died, in the hope that scientific advances may allow them to be revived in the future", 1960s: contraction of cryogenics.