Where does “Buriacja” come from?

Buriacja (Polish) comes from Russian Буря́тия, from Buryat буряад — Buryat, Buriat.

Ancestry of “Buriacja”, step by step

StepLanguageWordMeaning
1RussianБуря́тия
2BuryatбуряадBuryat, Buriat
Every word from Buryat буряадEvery word from Russian Буря́тия