Breadcrumb Home > Thesaurus > I Synonyms of icao Find synonyms for: Noun 1. International Civil Aviation Organization, ICAO, United Nations agency, UN agency usage: the United Nations agency concerned with civil aviation WordNet 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. 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: crepuscular Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language