radiant heat

noun

: heat transmitted by radiation as contrasted with that transmitted by conduction or convection

Examples of radiant heat in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The sun’s rays will warm the soil, and the cloth will hold in that radiant heat overnight. Neil Sperry, Fort Worth Star-Telegram, 24 Oct. 2025 The 3-dimensional construction, which looks kind of like a fine steel wool scrub pad, provides a 30% larger surface area, according to Fire Maple, delivering faster, more consistent radiant heat. New Atlas, 16 Oct. 2025 These temporary light coverings trap the radiant heat from the soil and keep even tender plants cozy. Lauren Landers, Better Homes & Gardens, 8 Oct. 2025 Temperatures in this upper region of the atmosphere, between roughly 7.5 and 31 miles (12 and 50 km) in altitude, are governed by a delicate balance between the absorption of ultraviolet sunlight by ozone and release of radiant heat by carbon dioxide. Nadir Jeevanjee, The Conversation, 3 Sep. 2025 See All Example Sentences for radiant heat

Word History

First Known Use

1621, in the meaning defined above

Time Traveler
The first known use of radiant heat was in 1621

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Cite this Entry

“Radiant heat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radiant%20heat. Accessed 29 Oct. 2025.

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