Extension is valid Scrabble Word

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

Definitions for EXTENSION in dictionary:

Words related to EXTENSION

extensions17 protense10

Words that contain EXTENSION

extensions17 coextension20 extensional18 inextension18 coextensions21 extensionist19 inextensions19 extensionally23 extensionists20 overextension23 extensionalism23 extensionality24 hyperextension29 overextensions24 extensionalisms24 hyperextensions30 extensionalitie22 extensionalities23

How to use EXTENSION in a sentence

Find what other words can be done using letters: "extension"
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