/ Dictionary / Index C cardiac: Meaning and Definition of Find definitions for: car•di•ac Pronunciation: (kär'dē-ak"), [key] — adj. of or pertaining to the heart: cardiac disease. of or pertaining to the esophageal portion of the stomach. —n. a cardiac remedy. a person suffering from heart disease. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cardiac (Thesaurus) cardia cardiac arrest 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