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.
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 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 heart is common in grave cases of scarlet fever, such cases as are properly termed malignant.
From A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases by Various
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 the cutaneous vascular areas leads to a larger flow of blood through the skin, and so tends to cool the body, and vice versa.
From Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1 by Various
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.
