Trial disrupted around university ceremony (6)
I believe the answer is:
ritual
'ceremony' is the definition.
(thesaurus)
'trial disrupted around university' is the wordplay.
'disrupted' indicates anagramming the letters.
'around' indicates putting letters inside.
'university' becomes 'u'.
'trial' is an anagram of 'rital'.
'rital' placed around 'u' is 'RITUAL'.
(Other definitions for ritual that I've seen before include "Habit, routine" , "Ceremony following a prescribed order" , "Custom; ceremony" , "Actions performed as in a religious ceremony" , "Ceremony, regular procedure" .)