Tersions is valid Scrabble Word

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

Definitions for TERSIONS in dictionary:

Words related to TERSIONS

tersion7
Find what other words can be done using letters: "tersions"
https://scrabble-word.com/finder/tersions
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