Trigynous is valid Scrabble Word

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

Definitions for TRIGYNOUS in dictionary:

Similar words containing GYNOU without suffix s and without prefix tri

digynous13 epigynous15 decagynous17 hexagynous24 hypogynous22 misogynous16 monogynous16 octogynous16 perigynous16 polygynous19 androgynous16 heptagynous20 pentagynous17 philogynous20 protogynous17 tetragynous15 dodecagynous20 heterogynous19 proterogynous19 androgynously21
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