• Permafrost

    Pronunciation

    • US IPA: ˈpɝməˌfrÉ”st

    Origin

    - + frost

    Full definition of permafrost

    Noun

    permafrost

    (plural permafrosts)
    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.

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