Byzantine is valid Scrabble Word

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

Definitions for BYZANTINE in dictionary:

How to use BYZANTINE in a sentence

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