Sulcus is valid Scrabble Word

Is sulcus a scrabble word?
Official Scrabble Players Dictionary YES
Official Tournament and Club Word List YES
Collins Scrabble Words YES
Is sulcus valid Words with Friends?
Words with Friends YES

Definitions for SULCUS in dictionary:

Words related to SULCUS

sulcal8 sulci7
Find what other words can be done using letters: "sulcus"
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