portal system
noun
Definition of portal system
: a system of veins that begins and ends in capillaries
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Origin and Etymology of portal system
portal vein
First Known Use: 1754
Medical Dictionary
portal system
noun
Medical Definition of portal system
: a system of veins that begins and ends in capillaries—see hepatic portal system, pituitary portal system
Learn More about portal system
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Britannica.com: Encyclopedia article about portal system
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