permafrost

[ pur-muh-frawst, -frost ]

/ ˈpɜr məˌfrɔst, -ˌfrɒst /

SEE SYNONYMS FOR permafrost ON THESAURUS.COM

noun

(in arctic or subarctic regions) perennially frozen subsoil.

Also called pergelisol.

Origin of permafrost

First recorded in 1943; perma(nent) + frost

Words nearby permafrost

perlucidus, perm, perma-, permaculture, permadeath, permafrost, permafrost table, permalink, Permalloy, permanence, permanency

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for permafrost

I wondered what would happen to the trees if some of the permafrost melted, allowing roots to expand in longer growing seasons.
Visiting the Arctic Circle…Before It’s Irreversibly Changed|Terry Greene Sterling|April 1, 2014|DAILY BEAST

British Dictionary definitions for permafrost

permafrost

/ (ˈpɜːməˌfrɒst) /

noun

ground that is permanently frozen, often to great depths, the surface sometimes thawing in the summer

Word Origin for permafrost

C20: from perma (nent) + frost

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for permafrost

permafrost

[ pûr′mə-frôst′ ]

A layer of soil or bedrock that has been continuously frozen for at least two years and as long as tens of thousands of years. Permafrost can reach depths of up to 1,524 m (4,999 ft). It is found throughout most of the polar regions and underlies about one fifth of the Earth's land surface.

单词	permafrost
释义	permafrost [ pur-muh-frawst, -frost ] / ˈpɜr məˌfrɔst, -ˌfrɒst / SEE SYNONYMS FOR permafrost ON THESAURUS.COM noun (in arctic or subarctic regions) perennially frozen subsoil. Also called pergelisol. Origin of permafrost First recorded in 1943; perma(nent) + frost Words nearby permafrost perlucidus, perm, perma-, permaculture, permadeath, permafrost, permafrost table, permalink, Permalloy, permanence, permanency Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for permafrost I wondered what would happen to the trees if some of the permafrost melted, allowing roots to expand in longer growing seasons. Visiting the Arctic Circle…Before It’s Irreversibly Changed\|Terry Greene Sterling\|April 1, 2014\|DAILY BEAST British Dictionary definitions for permafrost permafrost / (ˈpɜːməˌfrɒst) / noun ground that is permanently frozen, often to great depths, the surface sometimes thawing in the summer Word Origin for permafrost C20: from perma (nent) + frost Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Words related to permafrost chunk, glaze, hail, crystal, iceberg, icicle, glacier, sleet, diamonds, hailstone, floe, dry ice, ice cube Scientific definitions for permafrost permafrost [ pûr′mə-frôst′ ] A layer of soil or bedrock that has been continuously frozen for at least two years and as long as tens of thousands of years. Permafrost can reach depths of up to 1,524 m (4,999 ft). It is found throughout most of the polar regions and underlies about one fifth of the Earth's land surface. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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permafrost

noun

Origin of permafrost

Words nearby permafrost

Example sentences from the Web for permafrost

British Dictionary definitions for permafrost

noun

Word Origin for permafrost

Words related to permafrost

Scientific definitions for permafrost