dilator

[dahy-ley-ter, di-, dahy-ley-]

di·la·tor

[dahy-ley-ter, di-, dahy-ley-]
noun
1.
Anatomy. a muscle that dilates some cavity of the body.
2.
Surgery. an instrument for dilating body canals, orifices, or cavities.
Also, di·lat·er.


Origin:
1595–1605; dilate + -or2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Dilator is always a great word to know.
So is spinal nerve. Does it mean:
situated under the tongue, or on the underside of the tongue
a series of paired nerves that originate in the spinal cord and emerge, branching out to the region of the neck, trunk, or limbs
Collins
World English Dictionary
dilator, dilater or dilatator (daɪˈleɪtə, dɪ-, daɪˈleɪtə, dɪ-, ˌdaɪləˈteɪtə, ˌdɪ-)
 
n
1.  something that dilates an object, esp a surgical instrument for dilating a bodily cavity
2.  a muscle that expands an orifice or dilates an organ
 
dilater, dilater or dilatator
 
n
 
dilatator, dilater or dilatator
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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American Heritage
Medical Dictionary

dilator di·la·tor (dī-lā'tər, dī'lā'-, dĭ-lā'-)
n.

  1. An instrument or a substance for enlarging a cavity, canal, blood vessel, or opening.

  2. A muscle that dilates an orifice or a body part, such as a blood vessel or the pupil of the eye. Also called dilatator.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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