Pronunciation Noun

loop (plural loops)

  1. A length of thread, line or rope that is doubled over to make an opening.
  2. The opening so formed.
  3. A shape produced by a curve that bends around and crosses itself.
    Arches, loops, and whorls are patterns found in fingerprints.
  4. A ring road or beltway.
  5. An endless strip of tape or film allowing continuous repetition.
  6. A complete circuit for an electric current.
  7. (programming) A programmed sequence of instructions that is repeated until or while a particular condition is satisfied.
  8. (graph theory) An edge that begins and ends on the same vertex.
  9. (topology) A path that starts and ends at the same point.
  10. (transportation) A bus or rail route, walking route, etc. that starts and ends at the same point.
  11. (rail) A place at a terminus where trains or trams can turn round and go back the other way without having to reverse; a balloon loop, turning loop, or reversing loop.
  12. (algebra) A quasigroup with an identity element.
  13. A loop-shaped intrauterine device.
  14. An aerobatic maneuver in which an aircraft flies a circular path in a vertical plane.
  15. A small, narrow opening; a loophole.
    • c. 1597, William Shakespeare, “The First Part of Henry the Fourth, […]”, in Mr. William Shakespeares Comedies, Histories, & Tragedies: Published According to the True Originall Copies (First Folio), London: Printed by Isaac Iaggard, and Ed[ward] Blount, published 1623, OCLC 606515358 ↗, [Act IV, scene i]:
      And stop all sight-holes, every loop from whence / The eye of Reason may pry in upon us.
  16. Alternative form of loup (mass of iron).
  17. (biochemistry) A flexible region in a protein's secondary structure.
Translations Translations Translations Translations
  • French: circuit fermé
  • German: Stromkreis, geschlossener Stromkreis
  • Italian: anello
  • Portuguese: circuito
  • Russian: цепь
  • Spanish: circuito cerrado
Translations Translations Translations Translations Translations Translations
  • Italian: spirale
  • Russian: (внутрима́точная противозача́точная) спира́ль
  • French: boucle
  • German: Looping
  • Italian: cerchio della morte, giro della morte
  • Portuguese: looping, loop
  • Russian: мёртвая пе́тля́
  • Spanish: looping, rizo

loop (loops, present participle looping; past and past participle looped)

  1. (transitive) To form something into a loop.
  2. (transitive) To fasten or encircle something with a loop.
  3. (transitive) To fly an aircraft in a loop.
  4. (transitive) To move something in a loop.
  5. (transitive) To join electrical components to complete a circuit.
  6. (transitive) To duplicate the route of a pipeline.
  7. (transitive) To create an error in a computer program so that it runs in an endless loop and the computer freezes up.
  8. (intransitive) To form a loop.
  9. (intransitive) To move in a loop.
    The program loops until the user presses a key.

Proper noun
  1. Surname

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