Pronunciation: (chek"u-slu-vä'kē-u, -vak'ē-u),[key] —n. a former republic in central Europe: formed after World War I; comprised Bohemia, Moravia, Slovakia, and part of Silesia: a federal republic 1968–92. 49,383 sq. mi. (127,903 sq. km).Cap.:Prague. Formerly, (1990–92) Czech' and Slo'vak Fed'erative Repub'lic; (1948–89), Czech'o•slo'vak So'ialist Repub'lic.