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portal system

noun Anatomy.
  1. 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.
  2. (loosely) the hepatoportal system.
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Origin of portal system

First recorded in 1850–55
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

portal system in Medicine

portal system

n.
  1. A system of vessels in which blood, after passing through one capillary bed, is conveyed through a second capillary network.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.