Breadcrumb Home > Dictionary > Index R radiant heat: Meaning and Definition of Find definitions for: ra'diant heat' Pronunciation: [key] — Thermodynam. Thermodynam. heat energy transmitted by electromagnetic waves in contrast to heat transmitted by conduction or convection. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. radiant flux radiant heating TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: calumny Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language