PERMAFROST


Meaning of PERMAFROST in English

transcription, транскрипция: [ ˈpər-mə-ˌfrȯst ]

noun

Etymology: perma nent + frost

Date: 1943

: a permanently frozen layer at variable depth below the surface in frigid regions of a planet (as earth)

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.