Where does “ترکمنستان” come from?

ترکمنستان (Persian) comes from Persian ـستان, from Middle Persian -stʾn', from Proto-Indo-Iranian stáHnam, from Proto-Indo-European stéh₂-no-m, from Proto-Indo-European steh₂- — to stand.

Ancestry of “ترکمنستان”, step by step

ترکمنستان traces back through two separate lines of ancestry.

via Persian ـستان

StepLanguageWordMeaning
1Persianـستان-istan, -estan, -stan
2Middle Persian-stʾn'makes nouns of places; of indeterminate function
3Proto-Indo-IranianstáHnamthe act of standing; position, location, place
4Proto-Indo-Europeanstéh₂-no-m
5Proto-Indo-Europeansteh₂-to stand

via Persian ترکمن

StepLanguageWordMeaning
1PersianترکمنTurkmen (member of one of various Turkic ethnic groups in Central and West Asia)
2Old Turkic𐱅𐰇𐰼𐰜Turk
3Proto-Turkic*tür(ü)kTurk, Turkic people
Every word from Proto-Indo-European steh₂-Every word from Proto-Indo-European stéh₂-no-mEvery word from Middle Persian -stʾn'