- heat energy transmitted by electromagnetic waves in contrast to heat transmitted by conduction or convection.
Origin of radiant heat
First recorded in 1500–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- heat transferred in the form of electromagnetic radiation rather than by conduction or convection; infrared radiation
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012