permafrost
noun
per·ma·frost
ˈpər-mə-ˌfrȯst 
: 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
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But the pace of discovery — 26 new species identified and published through the American Society for Microbiology, with more than half of all permafrost bacteria sampled turning out to be unknown — suggests this library will keep growing.
—
Ryan Brennan, Kansas City Star, 13 Feb. 2026
More Species Are Waiting to Be Discovered So far, 52% of the bacteria researchers have encountered in permafrost tunnel samples have been new species.
—Ryan Brennan, Miami Herald, 13 Feb. 2026
In northern Europe, forest gains were associated with forest management, while in Asia, gains were observed in areas of post-Soviet agricultural abandonment, as well as in larch forests near the Yakutsk permafrost zone in Russia's Eastern Siberia, according to the paper.
—Julia Jacobo, ABC News, 10 Feb. 2026
Houses in the Arctic are built on stilts to keep the foundation from melting the permafrost, and the house from sinking.
—Scott Haugen, Outdoor Life, 4 Feb. 2026
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Ryan Brennan, Kansas City Star, 13 Feb. 2026
More Species Are Waiting to Be Discovered So far, 52% of the bacteria researchers have encountered in permafrost tunnel samples have been new species.
—Ryan Brennan, Miami Herald, 13 Feb. 2026
In northern Europe, forest gains were associated with forest management, while in Asia, gains were observed in areas of post-Soviet agricultural abandonment, as well as in larch forests near the Yakutsk permafrost zone in Russia's Eastern Siberia, according to the paper.
—Julia Jacobo, ABC News, 10 Feb. 2026
Houses in the Arctic are built on stilts to keep the foundation from melting the permafrost, and the house from sinking.
—Scott Haugen, Outdoor Life, 4 Feb. 2026
See All Example Sentences for permafrost
Cite this Entry
“Permafrost.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/permafrost. Accessed 15 Feb. 2026.
Copy CitationKids Definition
permafrost
noun
per·ma·frost
ˈpər-mə-ˌfrȯst
: a permanently frozen layer at variable depth below the surface in frigid regions of a planet (as earth)
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