/ Dictionary / Index C Cardiff: Meaning and Definition of Find definitions for: Car•diff Pronunciation: (kär'dif), [key] — n. a seaport in South Glamorgan, in SE Wales. 284,000. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cardiff (Thesaurus) cardiectomy cardigan Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language