Definition of Kurdistan
The country of Kurds, Land of the Kurds
Kurd: The Kurds
Kurdi: Belong to the Kurds
Kurdi+stan: The lands (country) belong to the Kurds
The Kurdish people are believed to combining a number of earlier tribal or ethnic groups including Mitanni, Lullubi, Guti, Cyrtians, Carduchi.
Academic sources consider Corduene as proto-Kurdish and following names were used when referring the Kurds and Kurdistan in history: Cordyaei, Gordyaei, Karduchoi, Cordueni, Gordyeni, Guti, Kordyoui, Karduchi, Kardueni, Qardu, Kardaye, Qardawaye, Cyrtians, Kyrtians, Cyrtii, Cadusii, Amardi (or "Mardi"), Mardastan, Mardpetakan, Mardian, Mards, Tapyri, Medes, Mādāya, Medoi, Medi, Krak, Ekrad, Ard Al Akrad, Arz ul Akrad, Ekradiyyun, Akradiyyun, Al Kurdi, Kord, Koord, Koerd, Curd, Curdistan, Koordistan.
-stan from Avestan stāna “to stand”,
*stā-, Proto-Indo-European root meaning ”to stand, set down, make or be firm" with derivatives meaning "place or thing that is standing”,
Russian стан “stan”,
English stay, stand, state, estate,