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Webster's New World College Dictionary » operation
operation
operation definition
op·era·tion (äp′ə rā′s̸hən)
noun
- the act, process, or method of operating
- the condition of being in action or at work
- a process or action that is part of a series in some work
- any movement or series of movements made in carrying out strategic military plans
- a center where such activities are monitored or supervised, as at an air base
- any specific plan, project, venture, etc. Operation Cleanup
- any surgical procedure performed, usually with the aid of instruments, to remedy a physical ailment or defect
- Math. any process, as addition, division, etc., involving a change or transformation in a quantity
Etymology: ME operacion < OFr < L operatio
operation Idioms
in operation
- in the act or process of making, working, etc.
- having an influence or effect; in force
Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.
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