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portal vein

American  

noun

Anatomy.
  1. the large vein conveying blood to the liver from the veins of the stomach, intestine, spleen, and pancreas.


portal vein British  

noun

  1. any vein connecting two capillary networks, esp in the liver ( hepatic portal vein )

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of portal vein

First recorded in 1835–45

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.

Samples were taken from the hepatic portal vein, which carries blood from the intestine to the liver, and from peripheral blood, which travels from the liver to the heart before circulating through the body.

From Science Daily • Dec. 14, 2025

The liver and intestines are directly connected via the portal vein, a blood vessel that transports nutrients absorbed in the intestines directly to the liver.

From Science Daily • Apr. 25, 2024

The intestines harbor numerous gut bacteria, and sometimes these bacteria and their related substances can enter the liver through the portal vein.

From Science Daily • Apr. 25, 2024

The hepatic portal vein delivers partially deoxygenated blood containing nutrients absorbed from the small intestine and actually supplies more oxygen to the liver than do the much smaller hepatic arteries.

From Textbooks • Jun. 19, 2013

Treatment.—In such cases it is advisable to produce a free action of the bowels, so as to remove the usually congested condition of the portal vein and liver.

From Special Report on Diseases of Cattle by United States. Bureau of Animal Industry

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