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operatory

[op-er-uh-tawr-ee, -tohr-ee] /ˈɒp ər əˌtɔr i, -ˌtoʊr i/
noun, plural operatories.
1.
a room or other area with special equipment and facilities, as for dental surgery, scientific experiments, or the like.
adjective
2.
Origin
1645-1655
1645-55; operate + -ory1, -ory2; compare Late Latin operātōrius working, acting
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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