Opening? It has developed around university (6)
I believe the answer is:
hiatus
'opening?' is the definition.
(thesaurus)
'it has developed around university' is the wordplay.
'developed' indicates an anagram.
'around' is an insertion indicator.
'university' becomes 'u'.
'it'+'has'='ithas'
'ithas' is an anagram of 'hiats'.
'hiats' going around 'u' is 'HIATUS'.
(Other definitions for hiatus that I've seen before include "Is a hut (anag.)" , "Disruption" , "Opening" , "Gap in continuity" , "Gap, interruption" .)