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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.

See Examples For:

As expected, the treatment altered the microbiome and changed the balance of metabolites in both peripheral blood and the hepatic portal vein.

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

Osaka University researchers discovered liver resident macrophages' pivotal role in defending against gut bacteria and related substances entering via the portal vein, particularly under compromised intestinal barrier conditions.

From Science Daily Apr. 25, 2024

The portal triad is a distinctive arrangement around the perimeter of hepatic lobules, consisting of three basic structures: a bile duct, a hepatic artery branch, and a hepatic portal vein branch.

From Textbooks Jun. 19, 2013

It not only secretes a digestive fluid, the bile, but it acts upon the food brought to it by the portal vein, and regulates the supply of digested food to the general system.

From Science in the Kitchen. by Mrs. E. E. Kellogg

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