OPEN-HEARTH Meaning of OPEN-HEARTH in English open-hearth BrE AmE ˌəʊp ə n ˈhɑːθ ◂ AmE \ ˌoʊp ə n ˈhɑːrθ ◂ Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012