Arccos is valid word

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

Definitions for ARCCOS in dictionary:

Words that contain ARCCOS

arccoses12 arccosine13 arccosines14

Similar words containing ARCCO without suffix s

arccoses12 arccosine13 arccosines14
Find what other words can be done using letters: "arccos"
https://scrabble-word.com/finder/arccos
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