/ Dictionary / Index C Celto-: Meaning and Definition of Find definitions for: Celto- Pronunciation: [key] a combining form oforCelto-Iberian. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Celticism Celto-Germanic 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