operating room

American  

noun

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

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Etymology

Origin of operating room

First recorded in 1885–90

Example Sentences

"There's a lot of interesting emotional circuits that are deep in the brain, but until now you couldn't manipulate them outside of the operating room."

From Science Daily • Feb. 4, 2026

Mills would wake up in an operating room, where a Russian surgeon stood over him.

From The Wall Street Journal • Jan. 2, 2026

"My love has just gone to the operating room," Bolsonaro's wife Michelle said in an Instagram post.

From Barron's • Dec. 25, 2025

"It's a way of humanising the operating room."

From BBC • Nov. 24, 2025

Alex thought of when Mami had shown them a face mask and told them she’d be expected to wear one as an operating room technician.

From "The Dead and the Gone" by Susan Beth Pfeffer