Definition of galactic coordinate
: a member of a system of celestial coordinates based on the equatorial plane of the Milky Way galaxy
What's Trending Now
More Trending Words
There's more!
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
First Known Use of galactic coordinate
1872
Seen and Heard
What made you want to look up galactic coordinate? Please tell us where you read or heard it (including the quote, if possible).
