surgery

(noun) the branch of medical science that treats disease or injury by operative procedures. Example: "He is professor of surgery at the harvard medical school."

(noun) a room where a doctor or dentist can be consulted. Example: "He read the warning in the doctor's surgery."

(noun) a room in a hospital equipped for the performance of surgical operations. Synonyms: operating room, OR, operating theater, operating theatre. Example: "Great care is taken to keep the operating rooms aseptic."

(noun) a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body. Synonyms: operation, surgical operation, surgical procedure, surgical process. Examples: "They will schedule the operation as soon as an operating room is available." "He died while undergoing surgery."