radiant heat

American

noun

Thermodynamics.

heat energy transmitted by electromagnetic waves in contrast to heat transmitted by conduction or convection.

radiant heat British

noun

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

Etymology

Origin of radiant heat

First recorded in 1500–10

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Orchard Hills homes are constructed with two factors in mind: radiant heat and ember intrusion.

From Los Angeles Times • Feb. 19, 2025

The radiant heat installer and electrician were happy.

From Seattle Times • Dec. 25, 2023

Like any hot object, it was giving off radiant heat -- what we’d now call long-wave infrared radiation.

From Scientific American • Nov. 9, 2023

The researchers investigated the complex interplay between the transfer of radiant heat and the thermochemical reaction.

From Science Daily • Oct. 27, 2023

This bright polished surface appropriates but a very small portion of the radiant heat.

From Lectures on Ventilation Being a Course Delivered in the Franklin Institute of Philadelphia by Leeds, Lewis W.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023