Arctic Circle

American  

noun

1. an imaginary line drawn parallel to the equator, at 23°28prime; S of the North Pole: between the North Frigid Zone and the North Temperate Zone.

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Arctic Circle British  

noun

1. the imaginary circle round the earth, parallel to the equator, at latitude 66° 32′ N; it marks the northernmost point at which the sun appears above the level of the horizon on the winter solstice

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Arctic Circle Scientific  

/ ärk′tĭk /

1. The parallel of latitude approximately 66°33′ north. It forms the boundary between the North Temperate and North Frigid zones.

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Arctic Circle Cultural  

1. Imaginary circle around the Earth about three-quarters of the way from the equator to the North Pole. North of this line is the “Land of the Midnight Sun,” where the sun never sets on the summer solstice.

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The Arctic Circle corresponds to the Antarctic Circle in the Southern Hemisphere.

Example Sentences

The resulting images capture mountains and fjords dissolving into sky, rendered in the deep azure light of the Arctic Circle.

From Los Angeles Times • May 26, 2026

The Norwegian team, based around 200 miles into the Arctic Circle, have forged a reputation for upsets, but on Tuesday night in Milan they produced one of the biggest in Champions League history.

From BBC • Feb. 24, 2026

Significant groupings appear beneath the Himalayas in southern Asia and near the Bering Strait between Asia and North America, south of the Arctic Circle.

From Science Daily • Feb. 20, 2026

Based inside the Arctic Circle, they often head south toward the Atlantic Ocean, potentially nearing the U.S. and most of Europe.

From The Wall Street Journal • Feb. 11, 2026

The nation’s entire nuclear arsenal was dependent on only two sources: a single rapidly depleting mine in the Belgian Congo and another in Canada, near the Arctic Circle.

From "Big Science" by Michael Hiltzik