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operating room

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operating room

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

Origin:
1885–90
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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op·er·at·ing room   (ŏp'ə-rā'tĭng)
n.   Abbr. OR
A room equipped for performing surgical operations.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

operating room n.
A room equipped for performing surgical operations.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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