Chronogrammatic is valid Scrabble Word

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

Definitions for CHRONOGRAMMATIC in dictionary:

Words related to CHRONOGRAMMATIC

chronogram18
Find what other words can be done using letters: "chronogrammatic"
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