Research establishment missing party in chapel (7)
I believe the answer is:
oratory
'chapel' is the definition.
(I've seen this before)
'research establishment missing party' is the wordplay.
I cannot really understand how this works, but
'party' could be 'tory' and 'tory' is found in the answer.
This may be the basis of clue (or it may be nonsense).
'in' is the link.
Can you help me to learn more?
(Other definitions for oratory that I've seen before include "speech day's main feature?" , "Public speaking - eloquence" , "formal speech" , "Private chapel; art of public speaking" , "prayer room" .)