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2017 Word of the Year

galactic coordinate

noun, Astronomy.
1.
Usually, galactic coordinates. a member of a system of coordinates that define the position of a celestial body with reference to the Milky Way.
Origin of galactic coordinate
1930-1935
First recorded in 1930-35
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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13
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