Where does “تاجىكىستان” come from?

تاجىكىستان (Uyghur) comes from Uyghur ـىستان, from Chagatai ـستان, 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 “تاجىكىستان”, step by step

تاجىكىستان traces back through two separate lines of ancestry.

via Uyghur ـىستان

StepLanguageWordMeaning
1Uyghurـىستانistan
2Chagataiـستان—
3Classical Persianـِسْتَان—
4Middle Persian-stʾn'makes nouns of places; of indeterminate function
5Old Persian𐎿𐎫𐎠𐎴place
6Proto-Iranianstā́nam—
7Proto-Indo-IranianstʰáHnam—
8Proto-Indo-European*steh₂-—

via Uyghur تاجىك

StepLanguageWordMeaning
1Uyghurتاجىك—
Every word from Proto-Indo-European *steh₂- →Every word from Middle Persian -stʾn' →Every word from Classical Persian ـِسْتَان →