/ Dictionary / Index H heat devil: Meaning and Definition of Find definitions for: heat' dev"il Pronunciation: [key] a wavering, shimmering disturbance of air above or around a hot surface. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. heat death heated Related Content Daily Word Quiz: ounterfeit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language