Substraction is valid Scrabble Word

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

Definitions for SUBSTRACTION in dictionary:

Words related to SUBSTRACTION

substract13

How to use SUBSTRACTION in a sentence

Find what other words can be done using letters: "substraction"
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