regeneration (n.)youdaoicibaDictYouDict[regeneration 词源字典]
mid-14c., from Late Latin regenerationem (nominative regeneratio) "a being born again," noun of action from past participle stem of Latin regenerare "make over, generate again," from re- "again" (see re-) + generare "to produce" (see generation). Originally spiritual; of animal tissue, early 15c.; of forests, 1888.[regeneration etymology, regeneration origin, 英语词源]