What is the meaning of surgery?

noun

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