noun, plural cannulas, cannulae [kan-yuh-lee] . Surgery.
a metal tube for insertion into the body to draw off fluid or to introduce medication.
Also, canula.

1675–85; < Neo-Latin, Latin: small reed, equivalent to cann(a) cane + -ula -ule

cannulation, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
cannula or canula (ˈkænjʊlə)
n , pl -las, -lae
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]
canula or canula (ˈkænjʊlə, -ˌliː)
[C17: from Latin: a small reed, from canna a reed]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

1680s, from L. cannula "small reed or pipe," dim. of canna "reed, pipe."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

cannula can·nu·la or can·u·la (kān'yə-lə)
n. pl. can·nu·las or can·nu·lae (-lē')
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.
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