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permafrost
noun [U] /ˈpɜː.mə.frɒst/
/ˈpɝː.mə.frɑːst/ specializedDefinition
› an area of land that is permanently frozen below the surfaceSnow and iceCold
(Definition of permafrost noun from the Cambridge Advanced Learner's Dictionary & Thesaurus
© Cambridge University Press)
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Synonyms and related words:
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