Oriel team resolved to improve (9)

I believe the answer is:

meliorate

'improve' is the definition.
('meliorate' can be a synonym of 'improve')

'oriel team resolved' is the wordplay.
'resolved' indicates an anagram.
'oriel'+'team'='orielteam'
'orielteam' with letters rearranged gives 'MELIORATE'.

'to' acts as a link.

(Another definition for meliorate that I've seen is " Improve".)

I've seen this clue in The Telegraph.

Want a hint initially instead of a full solution? Install my app