University lecturer buried in vault with separate compartments (8)
I believe the answer is:
cellular
'with separate compartments' is the definition.
(organised into separate cells)
'university lecturer buried in vault' is the wordplay.
'university' becomes 'u' (abbreviation for university).
'lecturer' becomes 'l' (abbreviation for lecturer).
'buried in' is an insertion indicator.
'vault' becomes 'cellar' (I've seen this before).
'u'+'l'='ul'
'ul' inserted within 'cellar' is 'CELLULAR'.
(Other definitions for cellular that I've seen before include "Divided into small compartments - porous" , "All cruel (anag.)" , "Like mobile phone" , "Pitted" , "Race lull (anag.)" .)