NOUN (1)

1. anything living after Noah's flood;


ADJECTIVE (1)

1. existing or occurring after Noah's flood;

The Collaborative International Dictionary of English v.0.48:

Postdiluvial \Post`di*lu"vi*al\, Postdiluvian
\Post`di*lu"vi*an\, a. [Pref. post- + diluvial, diluvian.]
   Being or happening after the flood in Noah's days.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Postdiluvian \Post`di*lu"vi*an\, n.
   One who lived after the flood.
   [1913 Webster]

WordNet (r) 3.0 (2006):

postdiluvian
    adj 1: existing or occurring after Noah's flood
    n 1: anything living after Noah's flood