Breadcrumb Home > Thesaurus > O Synonyms of orthopnea Find synonyms for: Noun 1. orthopnea, dyspnea, dyspnoea usage: form of dyspnea in which the person can breathe comfortably only when standing or sitting erect; associated with asthma and emphysema and angina pectoris WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of orthopnea (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: tintinnabulation Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language