/ Thesaurus / E Synonyms of endothelial Find synonyms for: Adjective1. endothelialusage: of or relating to or located in the endotheliumWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language