permafrost
pronunciation
How to pronounce permafrost in British English:
UK [ˈpɜːməfrɒst]
How to pronounce permafrost in American English:
US [ˈpɜːrməfrɔːst]
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- Noun:
- ground that is permanently frozen
Word Origin
- permafrost (n.)
- 1943, coined in English by Russian-born U.S. geologist Siemon W. Muller (1900-1970) from perm(anent) frost.
Example
- 1. Permafrost warms up , and infrastructure built on it founders .
- 2. Either way the permafrost becomes a source of greenhouse gas .
- 3. Their growth will likely counterbalance some of the increased emissions from melting permafrost .
- 4. In alaska , entire towns have begun to shift in the loosening permafrost .
- 5. One of the best available guides to this risk is a survey of 41 permafrost scientists published in nature last year .