/ Dictionary / Index R radiant heating: Meaning and Definition of Find definitions for: ra'diant heat'ing Pronunciation: [key] the means of heating objects or persons by radiation in which the intervening air is not heated. a system for heating by radiation from a surface, esp. from a surface heated by means of electric resistance, hot water, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. radiant heat Radiata Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language