Definition of galaxy noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˈɡæləksi//
    ; NAmE NAmE//ˈɡæləksi//
    (pl. galaxies) The universe
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  1. 1 [countable] any of the large systems of stars, etc. in outer space scientists observing phenomena in nearby galaxies Wordfinderasteroid, astronomy, comet, constellation, cosmic, galaxy, meteorite, orbit, space, the universe See related entries: The universe
  2. 2 the Galaxy (also the Milky Way) [singular] the system of stars that contains our sun and its planets, seen as a bright band in the night sky
  3. 3[countable] (informal) a group of famous people, or people with a particular skill a galaxy of Hollywood stars
  4. Word Originlate 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’.