Breadcrumb Home > Thesaurus > E Synonyms of endocardium Find synonyms for: Noun 1. endocardium, serous membrane, serosa usage: the membrane that lines the cavities of the heart and forms part of the heart valves WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of endocardium (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: apotheosis Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language