Nitrobacterium is valid Scrabble Word

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

Definitions for NITROBACTERIUM in dictionary:

Words related to NITROBACTERIUM

nitrobacteria17
Find what other words can be done using letters: "nitrobacterium"
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