operation

• Something to be done
• (psychology) the performance of some composite cognitive activity
• process or manner of functioning or operating
• (mathematics) calculation by mathematical methods
• activity by a military or naval force (as a maneuver or campaign)
• the state of being in effect or being operative
• a business especially one run on a large scale
• a planned activity involving many people performing various actions
• (computer science) data processing in which the result is completely specified by a rule (especially the processing that results from a single instruction)
• a medical procedure involving an incision with instruments
• a process or series of acts especially of a practical or mechanical nature involved in a particular form of work
• the activity of operating something (a machine or business etc.)
• The act or process of operating
• The method of working
• That which is operated or accomplished
• Effect produced
• 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

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