Noun

• S: (n) surgery (the branch of medical science that treats disease or injury by operative procedures) "he is professor of surgery at the Harvard Medical School"
• S: (n) surgery (a room where a doctor or dentist can be consulted) "he read the warning in the doctor's surgery"
• S: (n) operating room, OR, operating theater, operating theatre, surgery (a room in a hospital equipped for the performance of surgical operations) "great care is taken to keep the operating rooms aseptic"
• S: (n) operation, surgery, surgical operation, surgical procedure, surgical process (a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body) "they will schedule the operation as soon as an operating room is available"; "he died while undergoing surgery"