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Antarctic Circle

noun
  1. an imaginary line drawn parallel to the equator, at 23° 28prime; N of the South Pole: between the South Frigid Zone and the South Temperate Zone.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for antarctic circle

Antarctic Circle

noun
  1. the imaginary circle around the earth, parallel to the equator, at latitude 66° 32′ S; it marks the southernmost point at which the sun appears above the level of the horizon at the winter solstice
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

antarctic circle in Science

Antarctic Circle

[ănt-ärktĭk]
  1. The parallel of latitude approximately 66°33′ south. It forms the boundary between the South Temperate and South Frigid zones.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

antarctic circle in Culture

Antarctic Circle

An imaginary circle around the Earth about three-quarters of the way from the equator to the South Pole.

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Note

The Antarctic Circle corresponds to the Arctic Circle in the Northern Hemisphere.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.