Homothermous is valid Scrabble Word

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

Definitions for HOMOTHERMOUS in dictionary:

Similar words containing THERMOU without suffix s and without prefix homo

diathermous17 eurythermous20 idiothermous18 homeothermous23 homoeothermous24
Find what other words can be done using letters: "homothermous"
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