Part of centre at mental hospital may provide it (9)
I believe the answer is:
treatment
'it' is the definition.
The definition suggests a singular noun which matches the answer.
'part of centre at mental hospital' is the wordplay.
'part of' indicates a hidden word.
'TREATMENT' can be found hidden inside 'centre at mental hospital'.
'may provide' is the link.
Can you help me to learn more?
(Other definitions for treatment that I've seen before include "Cure, remedy" , "Medical attention" , "prescribed drugs possibly" , "The handling or management of something" , "patient progress" .)