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Permafrost

Permafrost

WordNet



noun


(1)   Ground that is permanently frozen
Wiktonary



Noun



  1. Permanently frozen ground, or a specific layer thereof.
    • 2003, Johannes C. Nonner, Introduction to Hydrogeology, ISBN 9026518706, page 157,
      Nevertheless, the water molecule is present, as ice, in a solid form in frozen soils or permafrosts, which cover large regions characterised by a polar climate.