extragalactic

E1X8T1R1A1G2A1L1A1C3T1I1C3

adjective

Originating outside of the Milky Way galaxy.

“Extragalactic astronomy is the study of things outside the Milky Way.”

Opposite
galacticintragalactic
OriginEnglish galactic ← Latin extrā ← Proto-Italic *eksteros →
UncommonScrabble 25
Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

adjectiveextragalactic (not comparable)
  1. not comparableastronomyOriginating outside of the Milky Way galaxy.

    Extragalactic astronomy is the study of things outside the Milky Way.

    Antonyms: galactic, Galactic

  2. not comparableastronomyOriginating outside of any galaxy.

    Antonyms: galactic, intragalactic

  3. not comparablespace flightliteratureOriginating outside of the local galaxy.

    Antonyms: galactic

Synonyms & antonyms

adjectiveOriginating outside of the Milky Way galaxy.

Opposite
galacticGalactic

adjectiveOriginating outside of any galaxy.

Opposite
galacticintragalactic

adjectiveOriginating outside of the local galaxy.

Opposite
galactic
Also see
anagalacticexogalactic

Origin

  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. Englishextragalactic

From extra- + galactic.

Full word history & related roots →

Translations

Esperanto ekstergalaksia
  • ekstergalaksiaoriginating outside of a galaxy
French extragalactique, extragalactique
  • extragalactiqueoriginating outside of the Milky Way
  • extragalactiqueoriginating outside of a galaxy
Irish eachtar-réaltrach, eachtar-réaltrach
  • eachtar-réaltrachoriginating outside of the Milky Way
  • eachtar-réaltrachoriginating outside of a galaxy
Italian estragalattico, extragalattico
  • estragalatticooriginating outside of a galaxy
  • extragalatticooriginating outside of a galaxy
Persian فراکهکشانی
  • فراکهکشانی (farâkahkešâni)originating outside of a galaxy
Polish pozagalaktyczny, ekstragalaktyczny
  • pozagalaktycznyoriginating outside of the Milky Way
  • ekstragalaktycznyoriginating outside of the Milky Way
  • pozagalaktycznyoriginating outside of a galaxy
  • ekstragalaktycznyoriginating outside of a galaxy
Romanian extragalactic
  • extragalacticoriginating outside of a galaxy
Spanish extragaláctico
  • extragalácticooriginating outside of a galaxy
Cite this entry
APA

extragalactic. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/extragalactic

MLA

“extragalactic.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/extragalactic. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “extragalactic,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/extragalactic.

Source: extragalactic on Wiktionary, CC BY-SA 4.0.