The word polar is an adjective. Polar means (1) having a pair of equal and opposite charges, (2) being of crucial importance, (3) extremely cold, (4) characterized by opposite extremes; completely opposed.
Polar is also an adjective that means (1) of or existing at or near a geographical pole or within the Arctic or Antarctic Circles, (2) located at or near or coming from the earth's poles.
The following articles and web pages elaborate on the word polar.
The subarctic regions comprise lands that lie just south of the Arctic Circle, including areas of Canada and Siberia. Learn about the topography and climate of the subarctic region.
Over 99% of terrestrial ice is bound up in the ice sheets covering Antarctic and Greenland. Even partial melting of this ice due to climate change will significantly contribute to sea level rise. ...
Science Daily. Thursday, 17 Sep 2020 12:28:38 EDT.
Antarctica Flights operates 12-hour sightseeing tours over the continent that take off and land on the same day. Passengers say its a cheaper, easier and warmer way to tour expanses of the polar region.
CNBC. Friday, 04 Sep 2020 05:34:56 GMT.
The following digital image illustrates the word polar.