Isoseismic is valid Scrabble Word

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

Definitions for ISOSEISMIC in dictionary:

Words related to ISOSEISMIC

isoseismics15

Words that contain ISOSEISMIC

isoseismics15
Find what other words can be done using letters: "isoseismic"
https://scrabble-word.com/finder/isoseismic
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