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Pronunciation: kath′ĕ-ter


  1. A tubular instrument to allow passage of fluid from or into a body cavity or blood vessel.
  2. Generally, a catheter designed to be passed through the urethra into the bladder to drain it of urine.

[G. kathetēr, fr. kathiēmi, to send down]

See Also: line5

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.