Polyhymnia Syllabification: (Pol·y·hym·ni·a)Pronunciation: /ˌpäliˈhimnēə/ Greek & Roman MythologyDefinition of Polyhymnia the Muse of the art of mime. Origin:via Latin from Greek, literally 'she of the many hymns'Polyhymnia in other Oxford dictionaries Definition of Polyhymnia in the British & World English dictionary