13 letters · 25 points in Scrabble
adjective outside or beyond a galaxy
originEtymology tree Proto-Indo-European *h₁éǵʰ Proto-Indo-European *-s Proto-Indo-European *h₁éǵʰs Proto-Indo-European *-teros Proto-Indo-European *h₁eǵʰsteros Proto-Italic *eksteros Latin exter Latin extrā English extra- English galactic English extragalactic From extra- + galactic.
Etymology from Wiktionary, CC BY-SA 3.0