University terrified by head of department leaving (7)
I believe the answer is:
reading
'university' is the definition.
(I've seen this before)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for reading that I've seen before include "Knowledge of literature" , "Grained (anag)" , "Interpreting text" , "to which Wilde was committed?" , "Ride nag (anag)" .)