Where does “tartarum” come from?

tartarum (Medieval Latin) comes from Byzantine Greek τάρταρον, 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 “tartarum”, step by step

StepLanguageWordMeaning
1Byzantine Greekτάρταρον—
2Arabicدُرْدِيّliquid sediment, lees, amurca
3Persianدردpain; ache; affliction
4Proto-Iranian*dr̥ti-—
5Proto-Indo-European*dʰṛ-to-—
6Proto-Indo-Europeandʰreyd-to have diarrhea

Words derived from “tartarum”

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