radiant heat

American  

noun

Thermodynamics.

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

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radiant heat British  

noun

1. heat transferred in the form of electromagnetic radiation rather than by conduction or convection; infrared radiation

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Etymology

Origin of radiant heat

First recorded in 1500–10

Example Sentences

See Examples For:

radiant heat

Put your windows on lockdown: Close blinds, shades or curtains during peak daylight hours — especially on south- and west-facing walls — to block radiant heat from entering.

From MarketWatch ● Jun. 29, 2026

It measures not just the air temperature but takes into account humidity, radiant heat from the sun and the court surface temperature.

From BBC ● Jun. 28, 2026

And what we’ve seen with the science is once you get over 30 feet of separation between structures, you have much less concern about radiant heat as a factor in causing urban conflagrations.

From Los Angeles Times ● Jan. 30, 2025

I responded: “I don’t want any air space. Put the insulation in direct contact with the radiant heat tubes and do whatever is necessary to ensure it never falls down.”

From Seattle Times ● Jan. 25, 2024

Rock salt is one of the best non-absorbents of radiant heat, allowing nearly the whole of the rays of heat to pass through unobstructed.

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