Term is arranged for address (6)
I believe the answer is:
mister
'address' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'term is arranged' is the wordplay.
'arranged' indicates anagramming the letters.
'term'+'is'='termis'
'termis' with letters rearranged gives 'MISTER'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for mister that I've seen before include "that's what you'd call him" , "Set rim (anag.)" , "Mr" , "Merits of form of address to man" , "Bloke" .)