Definition of permafrost
: a permanently frozen layer at variable depth below the surface in frigid regions of a planet (such as earth)
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Recent Examples of permafrost from the Web
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Unlike a hurricane or a flood, the loss of permafrost is silent, rarely dramatic, and never fatal.
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And in the Arctic, the threat looms of impermanent permafrost from which climate-altering methane will bubble free.
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Like most cities in the Russian Arctic, Norilsk was custom built for permafrost.
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In line with that mission, each of the nine galleries in 007 Elements—floating cubes within the permafrost of the mountain—is dedicated to an aspect of filmmaking.
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In reality, specimens found in the thawing permafrost are... less cute.
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However, Claverie believes there is low risk of a global pandemic from these diseases in permafrost.
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Large numbers of the animals would also trample snow cover, stopping it from acting like insulation for the ground and allowing the permafrost to feel the effects of the bitter Arctic winters.
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In 15 years, the Arctic has experienced shrinking sea ice, melting permafrost, the general decimation of its habitat and other phenomena, captured in a video that compiles thousand of NASA satellite images.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'permafrost.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of permafrost
permanent + frost
PERMAFROST Defined for English Language Learners
Definition of permafrost for English Language Learners
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: a layer of soil that is always frozen in very cold regions of the world
Learn More about permafrost
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See words that rhyme with permafrost Britannica.com: Encyclopedia article about permafrost
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