ventricle
Americannoun
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Zoology. any of various hollow organs or parts in an animal body.
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Anatomy.
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either of the two lower chambers on each side of the heart that receive blood from the atria and in turn force it into the arteries.
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one of a series of connecting cavities of the brain.
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noun
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a chamber of the heart, having thick muscular walls, that receives blood from the atrium and pumps it to the arteries
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any one of the four main cavities of the vertebrate brain, which contain cerebrospinal fluid
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any of various other small cavities in the body
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A chamber of the heart that receives blood from one or more atria and pumps it by muscular contraction into the arteries. Mammals, birds, and reptiles have two ventricles; amphibians and fish have one.
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Any of four fluid-filled cavities in the brain of vertebrate animals. The ventricles are filled with cerebrospinal fluid.
Etymology
Origin of ventricle
1350–1400; Middle English < Latin ventriculus belly, ventricle. See venter, -i-, -cle 1
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.
Ivy has single ventricle circulation, a life-limiting heart condition, which means only one side of her heart is working.
From BBC • Sep. 24, 2025
Harry Vanderspeigle has a big room in my heart, like my left ventricle.
From Los Angeles Times • Jun. 3, 2024
They examined the hearts of young and old mice and discovered that as the rodents aged, nerve fibers disappeared from the left ventricle, the chamber that pumps blood to most of the body.
From Science Magazine • May 22, 2024
In the rodent study, injecting the hydrogel into the right ventricle improved function and allowed the heart to tolerate increased blood pressure and volume.
From Science Daily • Mar. 6, 2024
First I pump the blood to the lungs to pick up the oxygen then to the left atrium and ventricle then to the aorta to go all around his body like it should.
From "Mockingbird" by Kathryn Erskine
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.
