Reportedly selected Oxford college illustrated (9)
I believe the answer is:
pictorial
'illustrated' is the definition.
(similar in meaning)
'reportedly selected oxford college' is the wordplay.
'reportedly' shows a homophone (sound like).
'selected' becomes 'picked' (picking is a kind of selecting).
'oxford college' becomes 'orial' (I can't explain this - if you can you should believe this answer much more).
'picked' sounds like 'pict'.
'pict'+'orial'='PICTORIAL'
Can you help me to learn more?
(Other definitions for pictorial that I've seen before include "Illustrated" , "Magazine" , "in photographs" , "Clip a riot (anag) - graphic" .)