The story
- Proto-Indo-European*h₂ŕ̥tḱos
- Proto-Hellenic*árktos
- Ancient Greekᾰ̓́ρκτος (ắrktos)
- Proto-Indo-European*wer-
- Ancient Greekοὖρος (oûros)
- Ancient GreekᾸ̓ρκτοῦρος (Ărktoûros)
- LatinArctūrus
- English todayArcturus
Borrowed from Latin Arctūrus.
Etymology from Wiktionary, CC BY-SA 4.0.