/ Dictionary / Index A acardia: Meaning and Definition of Find definitions for: a•car•di•a Pronunciation: (ā-kär'dē-u), [key] — n. Pathol. congenital absence of a heart. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: acardia (Thesaurus) Acapulco gold acari Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language