/ Thesaurus / U Synonyms of umbilical vein Find synonyms for: Noun1. umbilical vein, vena umbilicalis, vein, vena, venous blood vesselusage: a vein in the umbilical cord; returns nutrient blood from the placenta to the fetusWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language