sacral (adj.)youdaoicibaDictYouDict[sacral 词源字典]
1767, in anatomy, "of or pertaining to the sacrum, from Modern Latin sacralis. In anthropology, "pertaining to religious rites," 1882, from Latin sacrum "sacred thing, rite" (see sacred). Related: sacralization.[sacral etymology, sacral origin, 英语词源]