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galactic coordinate

noun
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Definition of galactic coordinate

: a member of a system of celestial coordinates based on the equatorial plane of the Milky Way galaxy

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First Known Use of galactic coordinate

1872, in the meaning defined above

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The first known use of galactic coordinate was in 1872

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Cite this Entry

“Galactic coordinate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/galactic%20coordinate. Accessed 25 Jan. 2021.

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