MERCIA Meaning of MERCIA in English Mercia BrE AmE ˈmɜːs i‿ə ˈmɜːʃ-, ˈmɜːʃ ə AmE \ ˈmɝːʃ i‿ə ˈmɝːʃ ə Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012