BuryatiaPronunciation: /bʊəˈjɑːtɪə/ (also Buryat Republic /ˌbʊəˈjɑːt/)Definition of Buryatia an autonomous republic in SE 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 US English dictionary