Retropulsion is valid Scrabble Word

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

Definitions for RETROPULSION in dictionary:

Words related to RETROPULSION

retropulsions15

Words that contain RETROPULSION

retropulsions15
Find what other words can be done using letters: "retropulsion"
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