dilatation
Americannoun
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a dilated formation or part.
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Pathology. an abnormal enlargement of an aperture or a canal of the body.
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Surgery.
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an enlargement made in a body aperture or canal for surgical or medical treatment.
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a restoration to normal patency of an abnormally small body opening or passageway, as of the anus or esophagus.
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Mechanics. the increase in volume per unit volume of a homogeneous substance.
Other Word Forms
Etymology
Origin of dilatation
1350–1400; Middle English (< Old French ) < Latin dīlātātiōn- (stem of dīlātātiō ), equivalent to dīlātāt ( us ) spread out (past participle of dīlātāre to dilate ) + iōn- -ion
Vocabulary lists containing dilatation
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
No, because the Blood that forms the Aneurisms and Varices is not extravasated nor accompany'd with Inflammation, but only a Tumour of Blood proceeding from the Dilatation of the Arteries and Veins.
From The Compleat Surgeon or, the whole Art of Surgery explain'd in a most familiar Method. by Le Clerc, Charles Gabriel
Dilatation of the cavities has been noticed as existing independently of thickened walls.
From Special Report on Diseases of Cattle by United States. Bureau of Animal Industry
Which shews, that this Light is refracted regularly without any Dilatation of the Rays.
From Opticks or, a Treatise of the Reflections, Refractions, Inflections, and Colours of Light by Newton, Isaac, Sir
Dilatation of the pupil occurs, whether the poison be taken internally or applied locally to the eye.
From Aids to Forensic Medicine and Toxicology by Robertson, W. G. Aitchison (William George Aitchison )
Dilatation of the conjunctival vessels was observed in thirty-four cases.
From Neuralgia and the Diseases that Resemble it by Anstie, Francis E.
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
