Exospherical is valid Scrabble Word

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

Definitions for EXOSPHERICAL in dictionary:

Similar words containing OSPHERIC without suffix al and without prefix ex

biospheric19 exospheric24 atmospheric20 ionospheric18 mesospheric20 atmospherics21 chemospheric26 hydrospheric26 lithospheric22 photospheric24 tropospheric21 heliospheric22 blogospheric22 atmospherical22 chromospheric27 stratospheric20 thermospheric25 asthenospheric24 magnetospheric24 microspherical25 subatmospheric25 atmospherically27 ionospherically25 stratospherical22
Find what other words can be done using letters: "exospherical"
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