Where does “ʾltyštʾl” come from?

ʾltyštʾl (Pahlavi) comes from Avestan 𐬭𐬀𐬚𐬀𐬉𐬱𐬙𐬀, from Avestan 𐬭𐬀𐬚𐬀, from Proto-Iranian Hráθah, from Indo-Iranian *Hrátʰas, from Proto-Indo-European Hrót-h₂-os, from Proto-Indo-European Hret- — to roll; wheel; to run, roll.

Ancestry of “ʾltyštʾl”, step by step

StepLanguageWordMeaning
1Avestan𐬭𐬀𐬚𐬀𐬉𐬱𐬙𐬀—
2Avestan𐬭𐬀𐬚𐬀chariot, car
3Proto-IranianHráθahchariot
4Indo-Iranian*Hrátʰas—
5Proto-Indo-EuropeanHrót-h₂-os—
6Proto-Indo-EuropeanHret-to roll; wheel; to run, roll
Every word from Proto-Indo-European Hret- →Every word from Proto-Indo-European Hrót-h₂-os →Every word from Indo-Iranian *Hrátʰas →