/ Dictionary / Index C Celtic: Meaning and Definition of Find definitions for: Celt•ic Pronunciation: (kel'tik, sel'-), [key] — n. a branch of the Indo-European family of languages, including esp. Irish, Scots Gaelic, Welsh, and Breton, which survive now in Ireland, the Scottish Highlands, Wales, and Brittany. Abbr.: Celt —adj. of the Celts or their languages. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: celtic (Thesaurus) celt Celtic cross Related Content Daily Word Quiz: pristine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language