The story
- Proto-Indo-European*h₂eh₁-
- Proto-Indo-European*h₂eh₁ter-
- Proto-Iranian*HáHtr̥š
- Proto-Indo-European*peh₂-
- Proto-Indo-European*peh₂-tó-s
- Proto-Indo-Iranian*paHtás
- Proto-Iranian*paHtáh
- Proto-Iranian*HaHtr̥paHtah
- Old Persian*Ātr̥pātah
- Ancient GreekἈτροπάτης (Atropátēs)
- LatinAtropatē
- English todayAtropates
Learned borrowing from Latin Atropatēs, borrowed from Ancient Greek Ἀτροπάτης (Atropátēs), borrowed from Old Persian *Ātr̥pātah, from Proto-Iranian *HaHtr̥paHtah, from *HáHtr̥š (“Fire; fire”) + *paHtáh (“protected”).
Etymology from Wiktionary, CC BY-SA 4.0.