Hysteroscope is valid Scrabble Word

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

Definitions for HYSTEROSCOPE in dictionary:

Words that contain HYSTEROSCOPE

hysteroscopes23
Find what other words can be done using letters: "hysteroscope"
https://scrabble-word.com/finder/hysteroscope
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