Breadcrumb Home > Thesaurus > A Synonyms of atrium Find synonyms for: Noun 1. atrium, chamber usage: any chamber that is connected to other chambers or passageways (especially one of the two upper chambers of the heart) 2. atrium, court, courtyard usage: the central area in a building; open to the sky WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of atrium (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: spurious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language