portal vein

noun

Definition of portal vein

: a vein that collects blood from one part of the body and distributes it in another through capillaries especially : a vein carrying blood from the digestive organs and spleen to the liver

Examples of portal vein in a Sentence

Recent Examples on the Web The portal vein brings venous blood to the liver, while this artery brings oxygenated arterial blood. Hannah Yasharoff, USA TODAY, "James Holzhauer missed these tricky 'Jeopardy!' clues; can you get them right?," 29 May 2019 First, the glucose molecules travel from the small intestine to the liver via the portal vein, Linsenmeyer explains. Carolyn L. Todd, SELF, "Here's What Carbs Actually Do in Your Body," 23 May 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'portal vein.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of portal vein

1765, in the meaning defined above

History and Etymology for portal vein

portal entry 2

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The first known use of portal vein was in 1765

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More Definitions for portal vein

portal vein

noun

Medical Definition of portal vein

: a large vein that is formed by fusion of other veins, that terminates in a capillary network, and that delivers blood to some area of the body other than the heart especially : hepatic portal vein

More from Merriam-Webster on portal vein

Britannica.com: Encyclopedia article about portal vein

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