Lanthanoid is valid Scrabble Word

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

Definitions for LANTHANOID in dictionary:

Words that contain LANTHANOID

lanthanoids15
Find what other words can be done using letters: "lanthanoid"
https://scrabble-word.com/finder/lanthanoid
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