noun · academic
permafrost
UK/ˈpɜːməfrɒst/US/ˈpɜːrməfrɔːst/PER·ma·frost
Ground (soil or rock) that remains frozen for two or more years, typically found in polar regions.
Examples
“Thawing permafrost can release large amounts of methane.”
“Buildings on permafrost may become unstable as the ground thaws.”
“Scientists are monitoring permafrost to understand climate feedbacks.”
Band 8 sentence
“As Arctic temperatures rise, the rapid thawing of permafrost could release ancient carbon stores and accelerate global warming.”
Collocations
- thawing permafrost
- permafrost regions
- melted permafrost
Word family
Common mistakes
permafrostes→permafrost
permafrostes are melting fast→permafrost is melting fast
Say it for a higher band
5frozen ground→6permanent frost→7+permafrost
Synonyms
perennial frost
Easily confused
frost
“The early frost damaged many of the crops in the valley.”
Related words
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In Environment & Climate
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