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sheath

Pronunciation: sheth

Definition:

  1. Any enveloping structure, such as the membranous covering of a muscle, nerve, or blood vessel. Any sheathlike structure.
  2. The prepuce of male animals, especially of the horse.
  3. A specially designed tubular instrument through which special obturators or cutting instruments can be passed, or through which blood clots, tissue fragments, and calculi can be evacuated.
  4. A tube used as an orthodontic appliance, usually on molars.

Synonym(s): vagina1

[A.S. scaeth]

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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