The Language Log reports: the Cupertino effect strikes again.
If you lazily accept the Office spellchecker's suggestions, you may experience what writers and translators for the European Union did, when the misspelled cooperation was "corrected" as "Cupertino". This was hence dubbed The Cupertino Effect.
This time, it's dentified being replaced by denitrified (instead of the intended identified).
The Office Natural Language Team confesses all.