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Syllabification: gal·ax·y
Pronunciation: /ˈɡaləksē

Definition of galaxy in English:

noun (plural galaxies)

1A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
Example sentences
  • There are reckoned to be about 400 billion stars in our galaxy, the Milky Way.
  • New planetary star systems and galaxies are being discovered almost daily.
  • Or it may expand so fast that gravity could never pull galaxies together again.
1.1 (the Galaxy) The galaxy of which the solar system is a part; the Milky Way.
Example sentences
  • And he needs to be president of the Galaxy to do it.
  • We realized that our Galaxy was just one of many billions of galaxies in the universe.
  • On another note, this story takes place now, just in a different part of the galaxy.
1.2A large group of impressive people or things: the four musicians have played with a galaxy of stars
More example sentences
  • To create his galaxy of impressions, Baxter watched television avidly, even backstage between stage shows.
  • The official website is now a positive galaxy of useful stuff.
  • RSS-fortified radio on mobile phones opens a whole galaxy of possibilities.

The Galaxy in which the earth is located is a disk-shaped spiral galaxy with approximately 100,000 million stars. The sun is located about two thirds of the way out from the center


late Middle English (originally referring to the Milky Way): via Old French from medieval Latin galaxia, from Greek galaxias (kuklos) 'milky (vault)', from gala, galakt- 'milk'.

Definition of galaxy in:

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