Medical Dictionary
portal vein
noun
Medical Definition of PORTAL VEIN
: a large vein that is formed by fusion of other veins, that terminates in a capillary network, and that delivers blood to some area of the body other than the heart; especially : hepatic portal vein
Seen & Heard
What made you want to look up portal vein? Please tell us where you read or heard it (including the quote, if possible).