Where does “خلجستان” come from?

خلجستان (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 “خلجستان”, step by step

خلجستان 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 خلج

StepLanguageWordMeaning
1PersianخلجKhalaj (person)
Every word from Proto-Indo-European steh₂- →Every word from Proto-Indo-European stéh₂-no-m →Every word from Middle Persian -stʾn' →