Meaning & Definition of Operation in English

1. The state of being in effect or being operative

• "That rule is no longer in operation"

2. 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"

3. 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"

4. (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"

5. Activity by a military or naval force (as a maneuver or campaign)

• "It was a joint operation of the navy and air force"

6. 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"

7. 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"

8. 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"

9. (psychology) the performance of some composite cognitive activity

• An operation that affects mental contents

• "The process of thinking"

• "The cognitive operation of remembering"

10. (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"

11. The activity of operating something (a machine or business etc.)

• "Her smooth operation of the vehicle gave us a surprisingly comfortable ride"