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2017 Word of the Year

astronomical triangle

noun
1.
the spherical triangle formed by the great circles connecting a celestial object, the zenith, and the celestial pole.
Origin of astronomical triangle
1915-1920
First recorded in 1915-20
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Word Value for astronomical

16
20
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