The difference between Operating room and Operating theatre
When used as nouns, operating room means a room in a hospital used for performing surgical operations, whereas operating theatre means a room in a hospital used for performing surgery (originally designed for operations in front of observers).
check bellow for the other definitions of Operating room and Operating theatre
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Operating room as a noun:
A room in a hospital used for performing surgical operations.
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Operating theatre as a noun:
A room in a hospital used for performing surgery (originally designed for operations in front of observers).