What does the word operation mean?

Usage examples for 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 by 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 by Daniel Webster
  3. And the operation will leave no trace on the original? – Baron Trigault's Vengeance Volume 2 (of 2) by Emile Gaboriau