One of the closely related languages of the Slavic peoples and a subgroup of Indo-European languages, having speakers in most of Eastern Europe, in much of the Balkans, in parts of Central Europe, and in the northern part of Asia.
A branch of the Indo-European family of languages, usually divided into three subbranches.
South Slavonic (including Old Church Slavonic, Macedonian, Bosnian, Croatian, Serbian, Bulgarian, etc.).
East Slavonic (including Ukrainian, Russian, etc.), and.
West Slavonic (including Polish, Czech, Slovak, etc.).