- a metal tube for insertion into the body to draw off fluid or to introduce medication.
Origin of cannula
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for cannula
He inserted a cannula of silver through the mouth until its head met an obstruction.Medieval Medicine</p>
James J. (James Joseph) Walsh
The rim surrounding the mouth of the cannula should be in contact with the skin.Special Report on Diseases of Cattle
U.S. Department of Agriculture
The operation is performed with a combined instrument called the trocar and cannula.Special Report on Diseases of the Horse
United States Department of Agriculture
Intubation, or the passage of a cannula through a stricture, is referred to later.
Attached to the handle was a thumb-rest and a tube for removing or adding fluids and a perforator within the cannula.
- surgery a narrow tube for insertion into a bodily cavity, as for draining off fluid, introducing medication, etc
C17: from Latin: a small reed, from canna a reed
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
Word Origin and History for cannula
1680s in surgical sense, from Latin cannula "small reed or pipe," diminutive of canna "reed, pipe" (see cane (n.)).
Online Etymology Dictionary, © 2010 Douglas Harper
- A flexible tube, usually containing a trocar at one end, that is inserted into a bodily cavity, duct, or vessel to drain fluid or administer a substance such as a medication.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.