Buryatia Syllabification: (Bur·yat·ia)Pronunciation: /bo͝orˈyätēə/ (also Buryat Republic /bo͝orˈyät, ˈbo͝orˌyät/)Definition of Buryatia an autonomous republic in southeastern Russia, between Lake Baikal and the Mongolian border; population 951,000 (est. 2009); capital, Ulan-Ude. Buryatia in other Oxford dictionaries Definition of Buryatia in the British & World English dictionary