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WordNet-Online
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Noun portal has 3 senses
- portal - a grand and imposing entrance (often extended metaphorically); "the portals of the cathedral"; "the portals of heaven"; "the portals of success"
--1 is a kind of entrance, entranceway, entryway, entry, entree
- portal site, portal - a site that the owner positions as an entrance to other sites on the internet; "a portal typically has search engines and free email and chat rooms etc."
--2 is a kind of web site, internet site, site
- portal vein, hepatic portal vein, portal, vena portae - a short vein that carries blood into the liver
--3 is a kind of vein, vena, venous blood vessel
--3 is a part of portal system
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