polar circle

noun

Definition of polar circle

: either of the two parallels of latitude each at a distance from a pole of the earth equal to about 23 degrees 27 minutes

First Known Use of polar circle

1556, in the meaning defined above

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The first known use of polar circle was in 1556

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Cite this Entry

“Polar circle.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/polar%20circle. Accessed 21 November 2019.

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