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.
Brachial flow-mediated dilatation was significantly higher following high-flavanol cocoa compared to low-flavanol cocoa 30 and 90 minutes after the stressful period.
From Science Daily ● Nov. 18, 2024
In rare cases, the stomach can expand to a dangerous size, known as acute gastric dilatation.
From Washington Post ● Nov. 21, 2022
The major disease threatening captive Spix’s was proventricular dilatation disease, which affects the nerves in parrots’ gastrointestinal tract and causes them to slowly waste away.
From Science Magazine ● Jun. 8, 2022
Most headaches, said Dr. Wolff, come from the dilatation of these blood vessels or from some growth or injury, like a brain tumor, that exerts a pull on them.
From Time Magazine Archive
This may be sufficient only to cause them to hypertrophy, but further strain may easily lead to exhaustion and to dilatation.
From Arteriosclerosis and Hypertension: with Chapters on Blood Pressure, 3rd Edition. by Louis Marshall Warfield
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.
