antediluvian (adj.)youdaoicibaDictYouDict[antediluvian 词源字典]
"before Noah's flood," 1640s, formed from Latin ante- "before" (see ante) + diluvium "a flood" (see deluge (n.)). Coined by English physician Sir Thomas Browne (1605-1682). As a noun meaning "person who lived before the Flood," from 1680s.[antediluvian etymology, antediluvian origin, 英语词源]