arctic circle
Proper noun 1. A major circle of latitude: The Arctic Circle is an imaginary line of latitude located approximately at 66°33′49.8″ north of the Equator. It is one of the five major circles of latitude that mark maps of the Earth. 2. A climatic and astronomical boundary: It defines the southernmost point in the Northern Hemisphere where the sun can remain continuously above or below the horizon for 24 hours. Specifically, it marks the northernmost point where the sun is visible on the December solstice and the southernmost point where the midnight sun is visible on the June solstice.
The term is used as a singular proper noun to refer to this specific geographical boundary. * The Arctic Circle passes through several countries, including Norway, Sweden, Finland, Russia, Canada, the United States (Alaska), Denmark (Greenland), and Iceland. * Crossing the Arctic Circle is a significant milestone for travelers and explorers. * The climate north of the Arctic Circle is characterized by extremely cold winters and short, cool summers.
- "Within the Arctic Circle" / "North of the Arctic Circle": Phrases used to describe locations situated inside this boundary.
- The town of Tromsø in Norway is located well within the Arctic Circle.
- "The land of the midnight sun": A poetic term often used for regions inside the Arctic Circle during summer.
- During summer, visitors to areas inside the Arctic Circle can experience the land of the midnight sun.
- Arctic (adjective): Pertaining to the region around the North Pole or the Arctic Circle. (e.g., )
- Antarctic Circle (proper noun): The corresponding circle of latitude in the Southern Hemisphere, at approximately 66°33′49.8″ south.
- Polar circle (noun): A general term for either the Arctic Circle or the Antarctic Circle.
- 66th parallel north (technical/specific)
- Northern polar circle (descriptive)
- Midnight sun: The natural phenomenon where the sun remains visible at midnight, occurring inside the Arctic Circle in summer.
- Polar night: The opposite phenomenon, where the sun stays below the horizon for more than 24 hours, occurring inside the Arctic Circle in winter.
- Solstice: Either the summer solstice (around June 21) or winter solstice (around December 22), the days on which the midnight sun and polar night begin at the Arctic Circle.
- a line of latitude near but to the south of the north pole; it marks the northernmost point at which the sun is visible on the northern winter solstice and the southernmost point at which the midnight sun can be seen on the northern summer solstice