1. (

• surgery

) the branch of medical science that treats disease or injury by operative procedures; "he is professor of surgery at the Harvard Medical School" ;

2. (

• surgery ,

) a room where a doctor or dentist can be consulted; "he read the warning in the doctor's surgery" ;

3. (

• 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" ;

4. (

• 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" ;