/ Dictionary / Index H heat death: Meaning and Definition of Find definitions for: heat' death" Pronunciation: [key] — Thermodynam. Thermodynam. See under(def. 3). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. heat cramp heat devil Related Content Daily Word Quiz: blanch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language