Definition of "arctic circle" [arctic circle]

• The parallel of latitude that runs 66° 33′ 39″ north of the Equator. The region north of this circle is known as the Arctic. (noun)

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• "At the age of fifty-four, he did not look forward to starting a new life above the arctic circle."
• "America, even within the arctic circle, where, for a brief space of time, it revels in the ardent heat of the short-lived summer of the north."
• "Air & Space Magazine visited Kiruna, Sweden, a mining town 90 miles above the arctic circle."