Definition - operation

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operation
  1. process or manner of functioning or operating; "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"
  2. the state of being in effect or being operative; "that rule is no longer in operation"
  3. the activity of operating something (a machine or business etc.); "her smooth operation of the vehicle gave us a surprisingly comfortable ride"
  4. a planned activity involving many people performing various actions; "they organized a rescue operation"; "the biggest police operation in French history"; "running a restaurant is quite an operation"; "consolidate the companies various operations"
  5. a process or series of acts especially of a practical or mechanical nature involved in a particular form of work; "the operations in building a house"; "certain machine tool operations"
  6. a medical procedure involving an incisio

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