Noun: operating room
Usage: N. Amer (elsewhere: operating theatre)
Usage: N. Amer (elsewhere: operating theatre)
- A room in a hospital equipped for the performance of surgical operations
"great care is taken to keep the operating rooms aseptic";
- OR [N. Amer], operating theater [US], operating theatre, surgery, theatre [Brit]
Derived forms: operating rooms
Type of: hospital room
Encyclopedia: Operating room