operating room

a specially equipped room, usually in a hospital, where surgical procedures are performed. Abbreviation: OR

Origin of operating room

First recorded in 1885–90

The sterilizer in the operating-room was out of order—that meant a quarrel with the chief engineer.

K |Mary Roberts Rinehart
The nurse called the doctor and two orderlies, and they carried him into the operating-room.

Kindred of the Dust |Peter B. Kyne
For answer, O'Brine strode to the operating-room communicator.

Rip Foster in Ride the Gray Planet |Harold Leland Goodwin
The pit of the operating-room was in disorder—towels everywhere, tables of instruments, steaming sterilizers.

K |Mary Roberts Rinehart

The clothing should be loose, the operating-room should be well aired and cool, and iced water should always be at hand.

A System of Operative Surgery, Volume IV (of 4) |Various

operating room

A room equipped for performing surgical operations.