permafrost

noun

per·​ma·​frost ˈpər-mə-ˌfrȯst How to pronounce permafrost (audio)
: a permanently frozen layer at variable depth below the surface in frigid regions of a planet (such as earth)

Examples of permafrost in a Sentence

Recent Examples on the Web They were not frozen in deep permafrost or ice, and the original organic material was almost certainly long gone many millions of years ago. Steven Salzberg, Forbes, 24 Sep. 2024 Climate Thawing permafrost threatens Alaska's rural villages. Anna Canny, NPR, 13 Sep. 2024 Dating back 52,000 years, this large female specimen was dug out of the permafrost in northeastern Siberia in 2018. Michael Irving, New Atlas, 11 July 2024 The mercury has likely been sequestered in the permafrost for millennia, the scientists said. Julia Jacobo, ABC News, 17 Aug. 2024 See all Example Sentences for permafrost 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'permafrost.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

permanent + frost

First Known Use

1943, in the meaning defined above

Time Traveler
The first known use of permafrost was in 1943

Dictionary Entries Near permafrost

Cite this Entry

“Permafrost.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/permafrost. Accessed 30 Oct. 2024.

Kids Definition

permafrost

noun
per·​ma·​frost ˈpər-mə-ˌfrȯst How to pronounce permafrost (audio)
: a permanently frozen layer at variable depth below the surface in frigid regions of a planet (as earth)

More from Merriam-Webster on permafrost

Last Updated: - Updated example sentences
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