postdiluvian

adjective

post·​di·​lu·​vi·​an ˌpōs(t)-də-ˈlü-vē-ən 

-dī-

: of or relating to the period after the flood described in the Bible

postdiluvian noun

Word History

Etymology

post- + Latin diluvium flood — more at deluge

First Known Use

1680, in the meaning defined above