portal system
Americannoun
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a vascular arrangement in which blood from the capillaries of one organ is transported to the capillaries of another organ by a connecting vein or veins.
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(loosely) the hepatoportal system.
Etymology
Origin of portal system
First recorded in 1850–55
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.
“How do you implement a shoe scan, or do you put it in with an existing portal system where the person is already standing while screening their shoes at the same time?” he said.
From Los Angeles Times ● Jul. 8, 2025
This capillary network is a part of the hypophyseal portal system that carries substances from the hypothalamus to the anterior pituitary and hormones from the anterior pituitary into the circulatory system.
From Textbooks ● Jun. 9, 2022
How does the renal portal system differ from the hypothalamo–hypophyseal and digestive portal systems?
From Textbooks ● Jun. 19, 2013
You saw the only other portal system with the hypothalamic-hypophyseal portal vessel in the endocrine chapter.
From Textbooks ● Jun. 19, 2013
Nausea and vomiting are frequent symptoms, no doubt due to the fact that the portal system of blood-vessels is so often the seat of congestion during a chill.
From A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases by Various
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.
