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# permafrost

noun (permafrost — uncountable)

«permafrost» in the English dictionary: everyday — its meanings, how the lessons use it, and examples, each with its tree on Mova.

## Everyday

Ground that stays frozen all year round for at least two years in a row, found in very cold places like the Arctic, Siberia, Alaska and northern Canada. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/permafrost/#m1)

### In the lessons

In geography and climate lessons, melting permafrost shows global warming: buildings sink, roads crack, and gases trapped inside escape. Frozen mammoths have been found in permafrost. Phrases: thawing permafrost, permafrost layer.

### Examples

- In northern Canada, the ground under the moss is permafrost. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/permafrost/#x1)
- Scientists found a baby mammoth frozen in the permafrost. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/permafrost/#x2)
- Houses in Siberia are built on stilts above the permafrost. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/permafrost/#x3)
- As the climate warms, the permafrost is thawing. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/permafrost/#x4)
- Trees cannot grow deep roots in permafrost. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/permafrost/#x5)
- Thawing permafrost lets out greenhouse gases. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/permafrost/#x6)

### Note

Uncountable: some permafrost, not a permafrost. From permanent + frost. The top layer may thaw in summer while the ground below stays frozen.

## On Mova

- [Trees and pragmatics of «permafrost» in the school dictionary](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/permafrost/): every meaning and example parsed by Mova, with its dependency tree and frames.
- [«permafrost» in the school dictionary](https://mova.elamur.ai/free/en/dictionaries/school/w/permafrost.html) on Mova free.