Crossword Genius

It’s an editor’s rambling essay (12)

Ross

I believe the answer is:

dissertation

'essay' is the definition.
(thesaurus)

'it's an editor's rambling' is the wordplay.
'rambling' indicates an anagram.
'its'+'an'+'editors'='itsaneditors'
'itsaneditors' is an anagram of 'DISSERTATION'.

(Other definitions for dissertation that I've seen before include "writing" , "thesis" , "Essay for a degree or diploma" , "scholarly work?" .)

I've seen this clue in The Hindu.
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