Noachian

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No·a·chi·an

N0122500 (nō-ā′kē-ən) also No·ach·ic (-ăk′ĭk) or No·ach·i·cal (-ĭ-kəl)adj.1. Bible Of or relating to Noah or his time.2. Antiquated; ancient; long obsolete.

Noachian

(nəʊˈeɪkɪən) or

Noachic

adj (Bible) Old Testament of or relating to the patriarch Noah

No•a•chi•an

(noʊˈeɪ ki ən) ,
adj. of or pertaining to the patriarch Noah or his time. [1670–80; Noach (variant of Noah) + -ian]
Thesaurus
Adj.1.Noachian - of or relating to Noah or his time; "Noachian deluge"