/ Dictionary / Index H heat of vaporization: Meaning and Definition of Find definitions for: heat' of vaporiza'tion Pronunciation: [key] — Physics. Physics. the heat absorbed per unit mass of a given material at its boiling point that completely converts the material to a gas at the same temperature: equal to the heat of condensation. Cf. latent heat. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. heat of sublimation heat prostration Related Content Daily Word Quiz: pallid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language