portal system
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noun Anatomy.
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.
(loosely) the hepatoportal system.
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Origin of portal system
First recorded in 1850–55
Words nearby portal system
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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Medical definitions for portal system
portal system
n.
A system of vessels in which blood, after passing through one capillary bed, is conveyed through a second capillary network.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.