What is the meaning of operation?

noun

• The state of being in effect or being operative.
  • usage: "that rule is no longer in operation"
• A business especially one run on a large scale.
  • usage: "a large-scale farming operation"; "a multinational operation"; "they paid taxes on every stage of the operation"; "they had to consolidate their operations"
• A planned activity involving many people performing various actions.
  • usage: "they organized a rescue operation"; "the biggest police operation in French history"; "running a restaurant is quite an operation"; "consolidate the companies various operations"
• Computer science. ( data processing in which the result is completely specified by a rule (especially the processing that results from a single instruction))
  • usage: "it can perform millions of operations per second"
• Activity by a military or naval force (as a maneuver or campaign. )
  • usage: "it was a joint operation of the navy and air force"
  • synonyms: military operation
• A medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body.
  • usage: "they will schedule the operation as soon as an operating room is available"; "he died while undergoing surgery"
  • synonyms: surgery, surgical operation, surgical procedure, surgical process
• A process or series of acts especially of a practical or mechanical nature involved in a particular form of work.
  • usage: "the operations in building a house"; "certain machine tool operations"
  • synonyms: procedure
• Process or manner of functioning or operating.
  • usage: "the power of its engine determines its operation"; "the plane's operation in high winds"; "they compared the cooking performance of each oven"; "the jet's performance conformed to high standards"
  • synonyms: functioning, performance
• Psychology) the performance of some composite cognitive activity; an operation that affects mental contents. (
  • usage: "the process of thinking"; "the cognitive operation of remembering"
  • synonyms: process, cognitive process, mental process, cognitive operation
• Mathematics) calculation by mathematical methods. (
  • usage: "the problems at the end of the chapter demonstrated the mathematical processes involved in the derivation"; "they were learning the basic operations of arithmetic"
  • synonyms: mathematical process, mathematical operation
• The activity of operating something (a machine or business etc.. )
  • usage: "her smooth operation of the vehicle gave us a surprisingly comfortable ride"