galactic longitude

noun

: longitude in the system of galactic coordinates measured in degrees eastward from the point where the galactic equator crosses the celestial equator in the constellation Aquila

Word History

First Known Use

1872, in the meaning defined above

Time Traveler

The first known use of galactic longitude was in 1872

See more words from the same year

Cite this Entry

Style

“Galactic longitude.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/galactic%20longitude. Accessed 23 Nov. 2024.

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