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English - English (Wordnet) dictionary (also found in English - Vietnamese, )
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  • the activity of operating something (a machine or business etc.)
    • her smooth operation of the vehicle gave us a surprisingly comfortable ride
  • (mathematics) calculation by mathematical methods
    • the problems at the end of the chapter demonstrated the mathematical processes involved in the derivation
    • they were learning the basic operations of arithmetic
  • (psychology) the performance of some composite cognitive activity; an operation that affects mental contents
    • the process of thinking
    • the cognitive operation of remembering
  • 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
  • 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
  • a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body
    • they will schedule the operation as soon as an operating room is available
    • he died while undergoing surgery
  • activity by a military or naval force (as a maneuver or campaign)
    • it was a joint operation of the navy and air force
  • (computer science) data processing in which the result is completely specified by a rule (especially the processing that results from a single instruction)
    • it can perform millions of operations per second
  • 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
  • a business especially one run on a large scale
    • a large-scale farming operation
    • a multinational operation
    • they paid taxes on every stage of the operation
    • they had to consolidate their operations
  • the state of being in effect or being operative
    • that rule is no longer in operation
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