Cumulostratus is valid Scrabble Word

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

Definitions for CUMULOSTRATUS in dictionary:

Words related to CUMULOSTRATUS

cumulostrati16

How to use CUMULOSTRATUS in a sentence

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