permafrost Noun, n, permafrost

1. permafrost

Appox. usage (any sense): 0.228 per million words

merzlotă Noun, f, merzlotă

1. permafrost

Appox. usage (any sense): less than 0.1 per million words

pergelisol Noun, n, pergelisol

1. permafrost

Appox. usage (any sense): less than 0.1 per million words