Advertisement

permafrost (n.)

"subsoil frozen year-round, as in the Arctic regions," 1943, coined in English by Russian-born U.S. geologist Siemon W. Muller (1900-1970) from perm(anent) frost.

Others Are Reading

Advertisement
Definitions of permafrost from WordNet

permafrost (n.)
ground that is permanently frozen;
From wordnet.princeton.edu