Noun
-
a very old person
-
any of the early patriarchs who lived prior to the Noachian deluge
- antediluvian patriarch
Adjective
-
so extremely old as seeming to belong to an earlier period
"a ramshackle antediluvian tenement"
"antediluvian ideas"
"archaic laws"
-
of or relating to the period before the biblical flood
"antediluvian man"