Crossword Genius

Marines off to a conference (7)

Ross

I believe the answer is:

seminar

'to a conference' is the definition.
(seminar is a kind of conference)

'marines off' is the wordplay.
'off' is an anagram indicator.
'marines' anagrammed gives 'SEMINAR'.

(Other definitions for seminar that I've seen before include "Training conference" , "Group discussion of subject" , "Study group on specific subject" , "Marines (anag.)" , "Meeting for study" .)

I've seen this clue in The Mirror.
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