polar circle

1. 1.

   a line of latitude at the north or south poles

   Broaderlatitude

   NarrowerAntarctic CircleArctic Circle

Questions about polar circle

What does polar circle mean?

polar circle means "a line of latitude at the north or south poles".

Is polar circle a common word?

polar circle is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.