Part of speech: noun

The act of operating; act; mode of action; process.

Part of speech: noun

Surgical treatment, as for removal of a part.

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Usage examples "operation":

  1. I have given you my plan, and, unless I am stopped, I will put it in operation. - "Tacitus: The Histories, Volumes I and II", Caius Cornelius Tacitus.
  2. It had gone into full operation, and, in regard to some objects intended by it, perhaps most of them, had produced all its expected effects. - "Select Speeches of Daniel Webster", Daniel Webster.
  3. And the operation will leave no trace on the original? - "Baron Trigault's Vengeance Volume 2 (of 2)", Emile Gaboriau.