Portuguese -istão

← Persian ـستان (borrowed)

← Proto-Indo-Iranian *sthāna (derived)

← Proto-Indo-European *steh₂- (derived)

← Proto-Iranian *stāna- (derived)

← Middle Persian -stʾn' (derived)

← Old Persian 𐎿𐎫𐎠𐎴 (derived)

→ Portuguese Tartaristão (affix)