Monostylous is valid Scrabble Word

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

Definitions for MONOSTYLOUS in dictionary:

Similar words containing STYLOU without suffix s and without prefix mono

heterostylous19 enantiostylous17
Find what other words can be done using letters: "monostylous"
https://scrabble-word.com/finder/monostylous
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