An '''operation''' is an organised, planned activity or string of activities with a specific aim, for example a [[police]] raid may be described as an operation, or military action may be called an operation.
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* a [[surgery|surgical procedure]].
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Operation is commonly used as:
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* the activites of running the [[business]].
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* a a [[synonym]] for medical [[surgery|surgical procedure]].
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* the activites of running a [[business]], especially a specific part of a larger business.
* a [[mathematical operation]] such as [[addition]].
* a [[mathematical operation]] such as [[addition]].