: an apparatus consisting of thermocouples combined so as to multiply the effect and used for generating electric currents or determining intensities of radiation

Examples of thermopile in a Sentence

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Both shells are backed with warming thermopile insulation that added warmth—but not too much—on biting, high humidity days. — Stephanie Pearson, Outside Online, 10 Oct. 2024

Word History

Etymology

pile entry 4

First Known Use

1849, in the meaning defined above

Time Traveler
The first known use of thermopile was in 1849

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Cite this Entry

“Thermopile.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thermopile. Accessed 24 Sep. 2026.

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