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Vinony

permafrost

noun

  1. soil frozen for a duration of at least two years
L227355 on Wikidata ↗

Wiktionary

Pronunciation: /ˈpɜːməˌfɹɔst/ / /ˈpɝməˌfɹɔst/

noun

Etymology: Etymology tree Proto-Indo-European *per-der. Proto-Italic *peri- Latin per- Proto-Indo-European *men-der. Proto-Italic *monēō Latin maneō Latin permaneōlbor. Middle French permanentbor. English permanentclip. English perma- Proto-Indo-European *prews- Proto-Indo-European *-tós Proto-Indo-European *prustós Proto-Germanic *frustaz Proto-West Germanic *frost Old English frost Middle English frost English frost English permafrost From perma- + frost.

  1. Permanently frozen ground, or a specific layer thereof.

    “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.”

    “In agreement with our overall trends within the permafrost samples, lower nirK and nirS and higher nosZ diversity have been identified in cryoturbated peat vs. unturbated peat soils (Palmer and Horn, 2012).”