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galactic coordinate

American  

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.

Etymology

Origin of galactic coordinate

First recorded in 1930–35

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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