Fetching details from the dictionary...
operating room; operating theatre
事故で運ばれた患者は、すぐに手術室へ。
The patient, brought in after an accident, was immediately taken to the operating room.
家族は手術室のドアの前で、不安そうに待っていた。
The family waited anxiously in front of the operating room door.
執刀医が手術室から出てきた。
The surgeon came out of the operating room.