Change in medical terminology (5)

I believe the answer is:

alter

'change' is the definition.
('alter' can be a synonym of 'change')

'in medical terminology' is the wordplay.
'in' says the answer is hidden in the clue.
'ALTER' is hidden in the letters of 'medical terminology'.

(Other definitions for alter that I've seen before include "reform" , "Become different" , "Change, make different" , "Make changes to" , "and 10 Across: Second self" .)

I've seen this clue in the Evening Standard.

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