Permafrost

//ˈpɝməˌfɹɔst// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Permanently frozen ground, or a specific layer thereof. countable, uncountable

    "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."

  2. 2
    ground that is permanently frozen wordnet

Synonyms

All synonyms
tjaele

Example

More examples

"One fifth of the earth's surface is covered by permafrost."

Etymology

From perma- + frost.

Related phrases

climate change

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.