PERMAFROST


Meaning of PERMAFROST in English

n.

Pronunciation: ' p ə r-m ə - ˌ fro ̇ st

Function: 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 Collegiate English Dictionary.      Merriam Webster - Энциклопедический словарь английского языка.