Where does “ـستان” come from?

ـستان (Chagatai) comes from Classical Persian ـِسْتَان, from Middle Persian -stʾn', from Old Persian 𐎿𐎫𐎠𐎴, from Proto-Iranian stā́nam, from Proto-Indo-Iranian stʰáHnam, from Proto-Indo-European *steh₂-.

Ancestry of “ـستان”, step by step

StepLanguageWordMeaning
1Classical Persianـِسْتَان—
2Middle Persian-stʾn'makes nouns of places; of indeterminate function
3Old Persian𐎿𐎫𐎠𐎴place
4Proto-Iranianstā́nam—
5Proto-Indo-IranianstʰáHnam—
6Proto-Indo-European*steh₂-—

Words derived from “ـستان”

Every word from Proto-Indo-European *steh₂- →Every word from Middle Persian -stʾn' →Every word from Classical Persian ـِسْتَان →