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trocar

[troh-kahr]
noun Surgery.
  1. a sharp-pointed instrument enclosed in a cannula, used for withdrawing fluid from a cavity, as the abdominal cavity.
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Origin of trocar

1700–10; earlier trocart < French, literally, three-sided, equivalent to tro- (variant of trois three) + cart, variant of carre side < Latin quadra something square
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for trocar

trocar

noun
  1. a surgical instrument for removing fluid from bodily cavities, consisting of a puncturing device situated inside a tube
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Word Origin

C18: from French trocart literally: with three sides, from trois three + carre side
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

trocar in Medicine

trocar

(trōkär′)
n.
  1. A sharp-pointed surgical instrument, used with a cannula to puncture a body cavity for fluid aspiration.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.