SCLAVONIA, a country of Europe, between the rivers Save, the Drave, and the Danube. It is divided into six counties, viz. Posegra, Zabrab, Creis, Warasden, Zreim, and Walpon; and belongs to the house of Austria. It was formerly called a kingdom; and is very narrow, not being above 75 miles in breadth; but it is 300 in length, from the frontiers of Austria to Belgrade. The eastern part is called Ratzia, and the inhabitants Ratzians. These, from a particular notion, are of the Greek church. The language of Scloponia is the mother of four others, namely, those of Hungary, Bohemia, Poland, and Russia.