Breadcrumb Home > Dictionary > Index C Cite Caddoan: Meaning and Definition of Find definitions for: Cad•do•an Pronunciation: (kad'ō-un), [key] — n. a family of North American Indian languages spoken in the upper Missouri valley in North Dakota, in the Platte valley in Nebraska, in southwestern Arkansas, and in neighboring parts of Oklahoma, Texas, and Louisiana. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: caddoan (Thesaurus) Caddo caddy TrendingHere are the facts and trivia that people are buzzing about. January 2021 Current Events: US News Noble Titles and Ranks in a Monarchy Chinese New Year History, Meaning, and Celebrations The Manchu The 5 Best Air Purifiers of 2020 Inaugural Trivia Related Content Daily Word Quiz: derogate Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language