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dilation

 [dahy-ley-shuhn, di-]   Example Sentences Origin

di·la·tion

   [dahy-ley-shuhn, di-]
noun
1.
the act of dilating; state of being dilated.
2.
dilatation.
Origin:
1590–1600; dilate + -ion

Related forms
non·di·la·tion, noun
o·ver·di·la·tion, noun
self-di·la·tion, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Dilation is always a great word to know.
So is ort. Does it mean:
a scrap or morsel of food left at a meal.
the offspring of a zebra and a donkey.
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Example Sentences
  • Chemicals in the venom result in the dilation of blood vessels, causing fluids to seep into.
  • Gravitational red shift wavelength dilation proves gravity is produced by the absorption of time by matter.
  • The cause of death was officially stated to be disease of the mitral valve and dilation of the heart.
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Collins
World English Dictionary
dilate (daɪˈleɪt, dɪ-)
 
—vb
1.  to expand or cause to expand; make or become wider or larger: the pupil of the eye dilates in the dark
2.  (intr; often foll by on or upon) to speak or write at length; expand or enlarge
 
[C14: from Latin dīlātāre to spread out, amplify, from dis- apart + lātus wide]
 
di'latable
 
—adj
 
dilata'bility
 
—n
 
di'latableness
 
—n
 
di'lation
 
—n
 
dilatation
 
—n
 
dila'tational
 
—adj
 
dilative
 
—adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

dilation
1590s, formed from dilate on the mistaken assumption that the -ate in that word was the L. verbal suffix (it is instead part of the stem); the proper form, dilatation, is older (c.1400).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

dilation di·la·tion (dī-lā'shən, dĭ-)
n.

  1. The act of expanding or the condition of being expanded.

  2. Dilatation.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
dilation   (dī-lā'shən, dĭ-)  Pronunciation Key 
The widening or stretching of an opening or a hollow structure in the body.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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