Polysynthesism is valid Scrabble Word

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

Definitions for POLYSYNTHESISM in dictionary:

Words related to POLYSYNTHESISM

polysynthesisms28

Words that contain POLYSYNTHESISM

polysynthesisms28
Find what other words can be done using letters: "polysynthesism"
https://scrabble-word.com/finder/polysynthesism
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