Mathesis is valid Scrabble Word

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

Definitions for MATHESIS in dictionary:

Words related to MATHESIS

matheses13

Similar words containing MATHESI without suffix s

acatamathesia20 acatamathesias21
Find what other words can be done using letters: "mathesis"
https://scrabble-word.com/finder/mathesis
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