Etymology

extragalactic

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Today it means: Originating outside of the Milky Way galaxy. Full definition →

English galactic ← Latin extrā ← Proto-Italic *eksteros
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The story

  1. Proto-Indo-European*h₁éǵʰ
  2. Proto-Indo-European*h₁éǵʰs
  3. Proto-Indo-European*h₁eǵʰsteros
  4. Proto-Italic*eksteros
  5. Latinexter
  6. Latinextrā
  7. Englishextra-
  8. Englishgalactic
  9. English todayextragalactic

From extra- + galactic.

Etymology from Wiktionary, CC BY-SA 4.0.