/ Thesaurus / M Synonyms of megacardia Find synonyms for: Noun1. cardiomegaly, megalocardia, megacardia, enlarged heart, symptomusage: an abnormal enlargement of the heart; "mild cardiomegaly is common in athletes"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: topography Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language