수술해요 · 수술했어요 · 수술할 거예요 · 수술하세요
to operate, to have surgery
Example
우리 할머니가 지난주에 무릎을 수술하셨어요.
My grandmother had knee surgery last week.
Word parts
수 hand+술 skill
Literally 'hand skill'.
Good to know
수술하다 works for both doctor and patient; 수술을 받다 clearly means the patient had it.