Definitions of operation

  1. the performance of some composite cognitive activity; an operation that affects mental contents; " the process of thinking"; " the cognitive operation of remembering"
  2. process or manner of functioning or operating; " the power of its engine determine 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"
  3. ( 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"
  4. activity by a military or naval force ( as a maneuver or campaign); " it was a joint operation of the navy and air force"
  5. the state of being in effect or being operative; " that rule is no longer in operation"
  6. the activity of operating something ( a machine or business etc.); " her smooth operation of the vehicle gave us a surprisingly comfortable ride"
  7. 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"
  8. 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"
  9. 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"
  10. ( 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"
  11. 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"
  12. ( psychology) the performance of some composite cognitive activity; an operation that affects mental contents; " the process of thinking"; " the cognitive operation of remembering"
  13. The act or process of operating; agency; the exertion of power, physical, mechanical, or moral.
  14. The method of working; mode of action.
  15. That which is operated or accomplished; an effect brought about in accordance with a definite plan; as, military or naval operations.
  16. Effect produced; influence.
  17. Something to be done; some transformation to be made upon quantities, the transformation being indicated either by rules or symbols.
  18. 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.
  19. Working or way of working; regular action; as, the machine is in operation; agency; surgical action upon the body; a series of movements of an army or fleet.
  20. The act of operating. 1. Any surgical procedure. 2. The action of a drug or other remedy. 3. An evacuation of the bowels.
  21. Incision or excision of any part of the body.
  22. Act or process of operating: agency: influence: method of working: action or movements: surgical performance.
  23. Agency; influence; action; surgical act.
  24. The act of operating; act; mode of action; process.
  25. Surgical treatment, as for removal of a part.
  26. The act or process of operating; agency; the exertion of power, physical, mechanical, or moral; manipulation; movement of an army or fleet, or of machinery, or any physical body.
  27. The act or process of operating; something to be done; agency; process; influence; action; effect; in surg., any action done by a qualified person upon the human body, with the hand or by means of an instrument, with a view to heal or bring to a normal state.

Usage examples for operation

  1. It is a very serious and difficult operation,- she may live through it, and she may not. – God's Good Man by Marie Corelli
  2. Repeat this operation many times. – The Cavalier by George Washington Cable
  3. I think he wanted to see its operation on one who did not even know she had taken anything. – Donal Grant by George MacDonald
  4. Before the sun was up the operation was completed, twenty or thirty yards up the Canyon. – The Golden Canyon Contents: The Golden Canyon; The Stone Chest by G. A. Henty
  5. In the mean time, what has been its operation? – The Rise and Fall of the Confederate Government, Vol. 1 (of 2) by Jefferson Davis
  6. In some cases, however, and especially in the ordinary operation of the plant, the furnace efficiency will, up to a certain point, increase with an increase in power. – Steam, Its Generation and Use by Babcock & Wilcox Co.
  7. " But that Commission hasn't been in operation for a long time," observed Pecson. – The Reign of Greed Complete English Version of 'El Filibusterismo' by Jose Rizal
  8. I remember to have seen Colbee's child, when about a month old, on whom this operation had been just performed by her mother. – A Complete Account of the Settlement at Port Jackson by Watkin Tench
  9. But he did not get much co- operation from Isabel Marlay. – The Mystery of Metropolisville by Edward Eggleston
  10. He was lying stretched on his bed, still wearing the fur coat in which he had left the office after the operation. – Atlantis by Gerhart Hauptmann
  11. And Max was again pleased because he had gone through all the operation when there in daylight, since it made things so much easier now. – The Strange Cabin on Catamount Island by Lawrence J. Leslie
  12. Intuition is the operation of the soul. – The Story of Anna Kingsford and Edward Maitland and of the new Gospel of Interpretation by Edward Maitland
  13. The operation was over. – First Person Paramount by Ambrose Pratt
  14. We were back in operation an hour after our attack. – Greylorn by John Keith Laumer
  15. He insisted on going alone to the hospital, although she was to be in the building during the operation. – The Happiest Time of Their Lives by Alice Duer Miller
  16. We can only account for this by the operation of the law of development in literature. – The Age of Tennyson by Hugh Walker
  17. Hours more of work, and the operation had been repeated. – The Cross-Cut by Courtney Ryley Cooper
  18. The process is in full career and operation now. – Natural Law in the Spiritual World by Henry Drummond
  19. You had an operation in September, you say. – The Pleasures of Ignorance by Robert Lynd
  20. The boat had made very little progress towards the Bellevite, and Christy was in no hurry to put his plan in operation. – Taken by the Enemy by Oliver Optic