portal system

noun

: a system of veins that begins and ends in capillaries

Examples of portal system in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Under the transfer portal system, athletes only have to submit their name into the portal to be transfer eligible, a change from the previous process that required permission from a coach, athletics administrator or other party to transfer. — Brett Dawson, The Courier-Journal, 13 Jan. 2023 More than 300,000 water customers – about 23% of total customers – were without drinking water Thursday morning, according to the island’s emergency portal system. — Mary Gilbert, CNN, 15 Aug. 2024

Word History

Etymology

portal vein

First Known Use

1754, in the meaning defined above

Time Traveler
The first known use of portal system was in 1754

Rhymes for portal system

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Browse Nearby Words

portaled
portal system
portal-to-portal
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Cite this Entry

“Portal system.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/portal%20system. Accessed 7 Jul. 2026.

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Medical Definition

portal system

noun
: a system of veins that begins and ends in capillaries see hepatic portal system, pituitary portal system

More from Merriam-Webster on portal system

Britannica.com: Encyclopedia article about portal system

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