gal·​axy | \ ˈga-lək-sē How to pronounce galaxy (audio) \
plural galaxies

Definition of galaxy

1a often capitalized : milky way galaxy used with the
b : any of the very large groups of stars and associated matter that are found throughout the universe
2a : an assemblage of brilliant or notable persons or things a galaxy of artists
b : world sense 11 remained galaxies apart on the issueNewsweek

Synonyms for galaxy


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The system of stars that includes our sun looks, in the night sky, like a broad band of light. We call this band the Milky Way. The idea of the whiteness of the Milky Way being similar to that of milk is much older than the English language, however. Galaxias, the Greek word for the Milky Way, was derived from the Greek gala, “milk.” English galaxy, derived from Greek galaxias, was not used until the 19th century as a generic term for other star systems as well as the one in which we live.

Examples of galaxy in a Sentence

The event was attended by a galaxy of artists. they're a galaxy apart when it comes to politics
Recent Examples on the Web The spaceship Bebop, captained by Spike Spiegel (Kôichi Yamadera), travels through the galaxy in 2071. Toby Grey, BGR, 16 Sep. 2022 The blue shows the nuclear core and young stars, the cyan and green highlight older stars, pink indicates star formation and red marks dust through the galaxy, with lighter oranges being hotter areas of dust. Julia Musto, Fox News, 31 Aug. 2022 And since Thor, the heir to the throne, is galavanting through the galaxy instead of fulfilling his royal duties, somebody has to be king. Ineye Komonibo,, 12 July 2022 From there, the teaser whizzes viewers through the Star Wars galaxy as evil Empire agents attempt to track down the last remnants of the Jedi order. Frank Pallotta, CNN, 9 Mar. 2022 But together, the ageless Timelord and the brave Londoner form an inseparable bond, outwitting alien werewolves and flirting their way through the galaxy. Ew Staff,, 14 Feb. 2022 Heesen’s 262-foot Project Cosmos, which is currently in build IRL and will mark the yard’s first superyacht built from aluminum, is depicted soaring through the galaxy with a couple of X-Wings by her side (above). Rachel Cormack, Robb Report, 4 May 2021 Six months later, the Earth should be moving maximally against the Sun’s motion, decreasing the speed that the Earth moves through the galaxy’s dark matter. Ethan Siegel, Forbes, 4 Mar. 2021 Filmmaker Matt Shakman is no longer boldly going into the Star Trek galaxy. Aaron Couch, The Hollywood Reporter, 26 Aug. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'galaxy.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of galaxy

15th century, in the meaning defined at sense 1a

History and Etymology for galaxy

Middle English galaxias, galaxie, borrowed from Late Latin galaxias, borrowed from Greek galaxías (probably originally conjoined with kýklos "wheel"), from galakt-, stem of gála "milk" (going back to Indo-European *glkt-, attested elsewhere only in Latin lact-, lac "milk," Armenian kat'n) + -ias, noun suffix, especially of natural phenomena

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The first known use of galaxy was in the 15th century

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Last Updated

20 Sep 2022

Cite this Entry

“Galaxy.” Dictionary, Merriam-Webster, Accessed 24 Sep. 2022.

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More Definitions for galaxy


gal·​axy | \ ˈga-lək-sē How to pronounce galaxy (audio) \
plural galaxies

Kids Definition of galaxy

2 : one of the very large groups of stars, gas, and dust that make up the universe

More from Merriam-Webster on galaxy

Nglish: Translation of galaxy for Spanish Speakers

Britannica English: Translation of galaxy for Arabic Speakers Encyclopedia article about galaxy

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