The name Kosovo is the most frequently used form in English when discussing the region in question. The Albanian spelling Kosova has lesser currency. The alternative spellings Cossovo and Kossovo were frequently used until the early 20th century.
Kosovo was part of the Ottoman state for 457 years. Ottoman traveller Evliya Çelebi, who went to the area in 1660 referred to central Kosovo as Arnavud and noted that in Vučitrn its inhabitants were speakers of Albanian or Turkish and few spoke "Boşnakca". The highlands around the Tetovo, Peć and Prizren areas Çelebi considered as being the "mountains of Arnavudluk". Çelebi referred to the "mountains of Peć" as being in Arnavudluk and considered the Ibar river that converged in Mitrovica as forming Kosovo's border with Bosnia. He viewed the "Kılab" or Lab river as having its source in Arnavudluk and by extension the Sitnica as being part of that river. Çelebi also included the central mountains of Kosovo within Arnavudluk. During Ottoman rule the area of Kosovo was referred to as Arnavudluk meaning Albania by the empire in its documents such as those dating from the eighteenth century.
Gegalik (Gegënia)
In the late Ottoman period Albanians claimed the sancaks of Yeni Pazar, Ipek, Prizren, Priștine and Üsküp which were all within Kosovo Vilayet as forming part of Gegalık or Land of the Gegs, a term named after Gheg Albanians who inhabited the area.
There is a theory within linguistics that the name Dardania used in ancient times for the area of Kosovo is derived from the Albanian word, meaning "pear". Due to its Slavic character, Kosovo Albanian leader Ibrahim Rugova supported a name change to "Dardania", in reference to the ancient kingdom and later-turned Roman province. Albanian nationalists seek to remove Serbian terminology in Kosovo. It, however, did not enter into general usage.
Kosovo and Metohija
The name "Kosovo and Metohija" was used for the autonomous province in Yugoslav Serbia since its creation in 1945 until 1968, when the term "Metohija" was dropped. In 1990, the name was reversed to "Kosovo and Metohija". After the Kosovo War, the United Nations mission used only "Kosovo" as the name of the province.