Where does “ῥῆον βάρβαρον” come from?

ῥῆον βάρβαρον (Koine Greek) comes from Ancient Greek ῥῆον, from Middle Persian rēwand, from Middle Persian lypʾs, from Proto-Iranian (h)rabā́š, from Proto-Indo-Iranian (s)rabʰā́ćš, from Proto-Indo-Iranian -ā́ćš, from Proto-Indo-European -eḱés.

Ancestry of “ῥῆον βάρβαρον”, step by step

ῥῆον βάρβαρον traces back through two separate lines of ancestry.

via Ancient Greek ῥῆον

StepLanguageWordMeaning
1Ancient Greekῥῆονrhubarb
2Middle Persianrēwand
3Middle Persianlypʾsrhubarb
4Proto-Iranian(h)rabā́šrhubarb; fennel
5Proto-Indo-Iranian(s)rabʰā́ćš
6Proto-Indo-Iranian-ā́ćšanimal and plant suffix
7Proto-Indo-European-eḱés

via Ancient Greek βάρβαρον

StepLanguageWordMeaning
1Ancient Greekβάρβαρονinflection of βάρβαρος : ## neuter...

Words derived from “ῥῆον βάρβαρον

Every word from Proto-Indo-European -eḱésEvery word from Proto-Indo-Iranian -ā́ćšEvery word from Proto-Indo-Iranian (s)rabʰā́ćš