Prototherian is valid Scrabble Word

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

Definitions for PROTOTHERIAN in dictionary:

Words related to PROTOTHERIAN

prototherians18

Words that contain PROTOTHERIAN

prototherians18
Find what other words can be done using letters: "prototherian"
https://scrabble-word.com/finder/prototherian
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