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What does loop mean?

Looking for the meaning or definition of the word loop? Here's what it means.

Noun
  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.
  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. (transport) A bus or rail route, walking route, etc. that starts and ends at the same point.
  11. (algebra) A quasigroup with an identity element.
  12. A loop-shaped intrauterine device.
  13. An aerobatic maneuver in which an aircraft flies a circular path in a vertical plane.
  14. A small, narrow opening; a loophole.
  15. Alternative form of loup (mass of iron).
  16. (biochemistry) A flexible region in a protein's secondary structure.
Verb
  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.
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