Is of a capital disposition (5)
I believe the answer is:
sofia
'capital disposition' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
'is of a' is the wordplay.
'is of a' can be anagrammed to 'SOFIA'.
But, I am unsure how this is indicated.
Can you help me to learn more?
(Other definitions for sofia that I've seen before include "Balkan capital" , "Capital of Bulgaria" , "European city" , "Bulgarian capital" , "seat of government" .)