operation
Pronunciation
  • (RP) IPA: /ˌɒpəˈɹeɪʃən/
  • (America) IPA: /ˌɑpəˈɹeɪʃən/

Noun

operation

  1. The method by which a device performs its function.
    It is dangerous to look at the beam of a laser while it is in operation.
  2. The method or practice by which actions are done.
  3. The act or process of operating; agency; the exertion of power, physical, mechanical, or moral.
    • 1689 (indicated as 1690), [John Locke], chapter 2, in An Essay Concerning Humane Understanding. […], London: […] Thomas Basset, […], OCLC 153628242 ↗, book I, page 8 ↗:
      the pain and sickness caused by manna are confessedly nothing but the effects of its operations on the stomach and guts.
    • Speculative painting, without the assistance of manual operation, can never attain to perfection.
  4. A planned undertaking.
    The police ran an operation to get vagrants off the streets.
    The Katrina relief operation was considered botched.
  5. A business or organization.
    We run our operation from a storefront.
    They run a multinational produce-supply operation.
  6. (medicine) A surgical procedure.
    She had an operation to remove her appendix.
  7. (computing, logic, mathematics) a procedure for generating a value from one or more other values (the operands).
  8. (military) A military campaign (e.g. Operation Desert Storm)
  9. (obsolete) Effect produced; influence.
    • The bards […] had great operation on the vulgar.
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