Where does “τάρταρον” come from?

τάρταρον (Byzantine Greek) comes from Arabic دُرْدِيّ, from Persian درد, from Proto-Iranian *dr̥ti-, from Proto-Indo-European *dʰṛ-to-, from Proto-Indo-European dʰreyd- — to have diarrhea.

Ancestry of “τάρταρον”, step by step

StepLanguageWordMeaning
1Arabicدُرْدِيّliquid sediment, lees, amurca
2Persianدردpain; ache; affliction
3Proto-Iranian*dr̥ti-
4Proto-Indo-European*dʰṛ-to-
5Proto-Indo-Europeandʰreyd-to have diarrhea

Words derived from “τάρταρον

Every word from Proto-Indo-European dʰreyd-Every word from Proto-Indo-European *dʰṛ-to-Every word from Proto-Iranian *dr̥ti-