Slovene or Slovenian (slovenski jezik or slovenščina) is an Indo-European language that belongs to the family of South Slavic languages. It is spoken by approximately 2 million speakers worldwide, the majority of whom live in Slovenia. Slovene is one of the few languages to have preserved the dual grammatical number from Proto-Indo-European. Also, Slovene and Slovak are the two modern Slavic languages whose names for themselves literally mean "Slavic" (slověnьskъ in old Slavonic). Slovene is one of 23 official and working languages of the European Union.
Source - Wikipeadia.com