hymenopteran Syllabification: (hy·me·nop·ter·an)Pronunciation: /ˌhīməˈnäptərən/ EntomologyDefinition of hymenopteran noun an insect of the order Hymenoptera, such as a bee, wasp, or ant. adjective relating to or denoting hymenopterans. Derivatives hymenopterousPronunciation: /-tərəs/ adjective hymenopteran in other Oxford dictionaries Definition of hymenopteran in the British & World English dictionary