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(Languages) a hypothetical subfamily of Indo-European languages consisting of Baltic and Slavonic. It is now generally believed that similarities between them result from geographical proximity rather than any special relationship
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|Noun||1.||Balto-Slavonic - a family of Indo-European languages including the Slavic and Baltic languages|
Indo-European language, Indo-Hittite, Indo-European - the family of languages that by 1000 BC were spoken throughout Europe and in parts of southwestern and southern Asia
Slavic, Slavic language, Slavonic, Slavonic language - a branch of the Indo-European family of languages