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Definition of operation:

  1. Any methodical action of the hand, or of the hand with instruments, on the human body, to produce a curative or remedial effect, as in amputation, etc.
  2. Effect produced; influence.
  3. Something to be done; some transformation to be made upon quantities, the transformation being indicated either by rules or symbols.
  4. That which is operated or accomplished; an effect brought about in accordance with a definite plan; as, military or naval operations.
  5. The act or process of operating; agency; the exertion of power, physical, mechanical, or moral.
  6. The method of working; mode of action.


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