Hope hospital leaves amount for medical procedure (9)
I believe the answer is:
operation
'medical procedure' is the definition.
(I know that operation is a type of medical procedure)
'hope hospital leaves amount' is the wordplay.
'hospital' becomes 'H' (abbreviation for hospital).
'leaves' indicates named letters should be taken away.
'amount' becomes 'ration' (I have seen 'adequate amount' mean 'ration' so perhaps 'amount' could also mean 'ration').
'hope' with 'h' taken away is 'ope'.
'ope'+'ration'='OPERATION'
'for' is the link.
(Other definitions for operation that I've seen before include "military undertaking" , "performance" , "In hospital procedure" , "battle" , "To one pair (anag.)" .)