/ Dictionary / Index Q Q-Celtic: Meaning and Definition of Find definitions for: Q-Celt•ic Pronunciation: (ky'sel'tik, -kel'-), [key] — n., adj. Goidelic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. QCD Q clearance Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language