BALTO-SLAVONIC Meaning of BALTO-SLAVONIC in English Balto-Slavonic BrE AmE ˌbɔːlt əʊ slə ˈvɒn ɪk ◂ ˌbɒlt- AmE \ -oʊ slə ˈvɑːn- ˌbɑːlt- Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012