Breadcrumb Home > Thesaurus > I Cite Synonyms of icao Find synonyms for: Noun1. International Civil Aviation Organization, ICAO, United Nations agency, UN agencyusage: the United Nations agency concerned with civil aviationWordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.Definition and meaning of icao (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. February 2021 Current Events: US News The Berlin Conference and the Partition of Africa The Implied Powers of Congress The Women's March on Versailles Keeping Your Brain Active in a COVID-19 World The Manchu Related Content Daily Word Quiz: suigeneris Analogy of the Day: Today?s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language