Helioscopes is valid Scrabble Word

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

11 letters word
18 points in Scrabble
20 points in WWF

Definitions for HELIOSCOPES in dictionary:

NOUN:

HELIOSCOPE, an instrument for observing the sun without injury to the eyes

Words related to HELIOSCOPES

helioscope17

Words that contain HELIOSCOPES

spectrohelioscopes29

Similar words containing HELIOSCOPE without suffix s

helioscope17 spectrohelioscope28 spectrohelioscopes29

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

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