PERMAFROST


Meaning of PERMAFROST in English

per ‧ ma ‧ frost /ˈpɜːməfrɒst $ ˈpɜːrməfrɒːst/ BrE AmE noun [uncountable]

[ Date: 1900-2000 ; Origin: permanent + frost ]

a layer of soil that is always frozen in countries where it is very cold

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.