permafrost

A thick subsurface layer of soil that remains frozen throughout the year.

IELTS

Example

Thawing permafrost in Siberia releases vast quantities of methane into the atmosphere.

Synonyms

frozen groundtundra soilice layer

Found in

Related Words

abolishto formally put an end to something; to eliminate or eradicateSAT · TOEFL · IELTSabstractExisting in thought or as an idea but not having a concrete physical existenceGRE · SAT · TOEFL · IELTSabundantExisting or available in large quantities; plentiful.IELTSaccelerateTo begin to move more quickly; to increase the rate of something.SAT · IELTSaccommodateTo provide lodging or space for; to adapt to or make room for.SAT · TOEFL · IELTSaccurateFree from error; exact and correctSAT · TOEFL · IELTSachieveTo successfully bring about or reach a desired objective or result.SAT · TOEFL · IELTSactivateTo make something active or operative; to set in motion.SAT · IELTS

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