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.
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 is, however, its ordinary condition, especially in the fully-formed attack.
From A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases by Various
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
Dilatation and tortuosity of the anterior ciliary veins are due apparently to excessive flow of blood through them on account of the abnormally small amount carried off by the venae vorticosae.
From Glaucoma A Symposium Presented at a Meeting of the Chicago Ophthalmological Society, November 17, 1913 by Nance, Willis O.
Dilatation of a stricture may be necessary, and may be accomplished by the forms of bronchial dilators shown in Fig.
From Bronchoscopy and Esophagoscopy A Manual of Peroral Endoscopy and Laryngeal Surgery by Jackson, Chevalier
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.
