portal system

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portal system

n.
A system of veins that begins and ends with a capillary network.

por′tal sys`tem


n.
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.
[1850–55]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.portal system - system of veins that carry blood from the abdominal organs to the liverportal system - system of veins that carry blood from the abdominal organs to the liver
hepatic portal vein, portal vein, vena portae, portal - a short vein that carries blood into the liver
vascular system - the vessels and tissue that carry or circulate fluids such as blood or lymph or sap through the body of an animal or plant
References in periodicals archive ?
The Z Portal systems are expected to be deployed for homeland security applications at multiple border locations.
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The Z Portal systems will provide homeland security officials with advanced technology to quickly and easily detect narcotics and terrorist weapons in vehicles entering U.