frigid zone
Noun
Meaning
the part of the Earth's surface forming a cap over a pole; characterized by frigid climate
Source: WordNetSynonyms
Hypernyms
Examples
The theoretical existence of a Frigid Zone, and temperate zones where the nights are very short in summer and the sun does not set at the summer solstice, was already known.
The types of vegetation here range from the Torrid Zone to Frigid Zone vertically.