Subcutaneous incision? (3)
I believe the answer is:
cut
'incision?' is the definition.
(incision is a kind of cut)
'subcutaneous' is the wordplay.
'CUT' is hidden within the letters.
But, I'm uncertain how this is indicated.
Can you help me to learn more?
(Other definitions for cut that I've seen before include "Sever - hurt - snub" , "saving" , "Incise" , "score" , "Saw" .)