Gonioscope is valid Scrabble Word

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

Definitions for GONIOSCOPE in dictionary:

Words related to GONIOSCOPE

gonioscopes16

Words that contain GONIOSCOPE

gonioscopes16
Find what other words can be done using letters: "gonioscope"
https://scrabble-word.com/finder/gonioscope
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