Possible Definitions:
1. Operation (n.) The act or process of operating; agency; the exertion of power, physical, mechanical, or moral.
2. Operation (n.) The method of working; mode of action.
3. Operation (n.) That which is operated or accomplished; an effect brought about in accordance with a definite plan; as, military or naval operations.
4. Operation (n.) Effect produced; influence.
5. Operation (n.) Something to be done; some transformation to be made upon quantities, the transformation being indicated either by rules or symbols.
6. Operation (n.) 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.
