(n) a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body, Syn. surgical procedure, surgical operation, surgery, surgical process, Example:they will schedule the operation as soon as an operating room is available; he died while undergoing surgery
[ないか, naika] (n, adj-no) (1) internal medicine, i.e. treatment by medical procedures rather than surgical procedures; (2) department of internal medicine (hospital, etc.); (P)#6319