ULAANBAATAR Meaning of ULAANBAATAR in English U ‧ laan ‧ baa ‧ tar /ˌuːlɑːn ˈbɑːtɑːʳ/ BrE AmE the capital city of Mongolia, formerly called Ulan Bator Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012