seborrhea (n.)youdaoicibaDictYouDict[seborrhea 词源字典]
also seborrhoea, "discharge of sebaceous matter, especially as a scalp condition," 1849, coined in Modern Latin as a hybrid, from sebo-, used as comb. form of Latin sebum "tallow, suet, grease" (see sebum) + Greek hroia "flow, flux," from rhein "to flow" (see rheum)[seborrhea etymology, seborrhea origin, 英语词源]