antarctic circle
Definition
- Proper noun:
- A line of latitude: The Antarctic Circle is one of the five major circles of latitude marked on maps of the Earth. It is the parallel of latitude located at approximately 66°33′49.9″ south of the Equator.
Usage
- The Antarctic Circle is used to denote the southernmost region where, on the December solstice, the sun remains at or above the horizon for a full 24 hours (midnight sun), and on the June solstice, the sun remains at or below the horizon for a full 24 hours (polar night).
- It is a geographical boundary used in contexts discussing climate, astronomy, and exploration.
Examples
Advanced Usage
- "South of the Antarctic Circle": This phrase describes the region between the circle and the South Pole, known as the Antarctic region.
- The research station is located south of the Antarctic Circle.
Variants and Related Words
- Antarctic (adjective): Of or relating to the region south of the Antarctic Circle, especially the continent of Antarctica.
- antarctic climate, antarctic exploration
- Antarctica (proper noun): The continent located within the Antarctic Circle.
- Arctic Circle (proper noun): The corresponding line of latitude in the Northern Hemisphere.
Synonyms
- Southern polar circle: A less common synonym.
- 66°33′S: The coordinate specification.
Related Phrases
- Circle of latitude: A general term for any line of latitude, of which the Antarctic Circle is one.
- Polar circle: A term that can refer to either the Antarctic Circle or the Arctic Circle.
Noun
-
a line of latitude north of the south pole
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