/ Dictionary / Index L latent heat: Meaning and Definition of Find definitions for: la'tent heat' Pronunciation: [key] — Physics. Physics. heat absorbed or radiated during a change of phase at constant temperature and pressure. Cf. heat of fusion, heat of vaporization. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. latent function latent image Related Content Daily Word Quiz: candid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language