Entoptics is valid Scrabble Word

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

Definitions for ENTOPTICS in dictionary:

Similar words containing TOPTIC without suffix s and without prefix en

autoptic12 entoptic12 autoptical14 autoptically19
Find what other words can be done using letters: "entoptics"
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