Summation is valid Scrabble Word

Is summation a scrabble word?
Official Scrabble Players Dictionary YES
Official Tournament and Club Word List YES
Collins Scrabble Words YES
Is summation valid Words with Friends?
Words with Friends YES

Definitions for SUMMATION in dictionary:

Words related to SUMMATION

summary14 summational15 summations14 summative16

How to use SUMMATION in a sentence

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