Postdiluvial is valid Scrabble Word

Is postdiluvial a scrabble word?
Official Scrabble Players Dictionary NO
Official Tournament and Club Word List NO
Collins Scrabble Words YES
Is postdiluvial valid Words with Friends?
Words with Friends NO

Definitions for POSTDILUVIAL in dictionary:

Similar words containing DILUVI without suffix al and without prefix post

diluvia11 diluvial12 diluvian12 diluvion12 diluvium14 diluvions13 diluviums15 diluvialism17 diluvialist15 antediluvial16 antediluvian16 diluvialisms18 diluvialists16 postdiluvian18 antediluvians17 postdiluvians19 antediluvially21
Find what other words can be done using letters: "postdiluvial"
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