eutherian Syllabification: (eu·the·ri·an)Pronunciation: /yo͞oˈTHi(ə)rēən/ ZoologyDefinition of eutherian noun a mammal of the major group Eutheria, which includes all the placentals and excludes the marsupials and monotremes. adjective relating to or denoting eutherians. eutherian in other Oxford dictionaries Definition of eutherian in the British & World English dictionary
