/ Dictionary / Index H heart disease: Meaning and Definition of Find definitions for: heart' disease" Pronunciation: [key] any condition of the heart that impairs its functioning. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. heart cherry hearted Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language