ther·​mo·​pile ˈthər-mə-ˌpī(-ə)l How to pronounce thermopile (audio)
: an apparatus consisting of thermocouples combined so as to multiply the effect and used for generating electric currents or determining intensities of radiation

Example Sentences

Recent Examples on the Web Both shells are backed with warming thermopile insulation that added warmth—but not too much—on biting, high humidity days. Stephanie Pearson, Outside Online, 30 Aug. 2022

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'thermopile.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History


pile entry 4

First Known Use

1849, in the meaning defined above

Time Traveler
The first known use of thermopile was in 1849

Dictionary Entries Near thermopile

Cite this Entry

“Thermopile.” Dictionary, Merriam-Webster, Accessed 20 Mar. 2023.

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