Extensification is valid Scrabble Word

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

Definitions for EXTENSIFICATION in dictionary:

Similar words containing TENSIFICA without suffix tion and without prefix ex

intensification20 latensification20 latensifications21 intensifications21
Find what other words can be done using letters: "extensification"
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