Refers to the branch of medicine dealing with operations, as opposed to internal medicine (内科).
See also: 内科
He is a specialist in surgery.
Treatment methods differ greatly between surgery and internal medicine.
surgery department
The hospital department where surgical procedures are performed.
The surgery department is on the third floor.
I got injured and went to see a surgeon at the hospital.
My father is going to have surgery in the surgical department.
He is specializing in surgery at university.
oral surgery; dental surgery