/ Dictionary / Index A Arkadelphia: Meaning and Definition of Find definitions for: Ar•ka•del•phia Pronunciation: (är"ku-del'fē-u), [key] — n. a city in central Arkansas. 10,005. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ark Arkansas Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language