খোরাসান নামটির উৎপত্তি কোন শব্দ থেকে ?
Khorasan (Middle Persian: ; "Xorāsān", ), sometimes called Greater Khorasan, is a historical region lying in northeast of Greater Persia, including part of Central Asia and Afghanistan. The name simply means "East, Orient" (literally "sunrise") and loosely includes the territory of the Sasanian Empire north-east of Persia proper. Early Islamic usage often regarded everywhere east of so-called Jibal or what was subsequently termed 'Iraq Ajami' (Persian Iraq), as being included in a vast and loosely-defined region of Khorasan, which might even extend to the Indus Valley and Sindh. During the Islamic period, Khorasan along with Persian Iraq were two important territories. The boundary between these two was the region surrounding the cities of Gurgan and Qumis (modern Damghan). In particular, the Ghaznavids, Seljuqs and Timurids divided their empires into Iraqi and Khorasani regions.
Xorāsān