Isoptera Syllabification: (I·sop·te·ra)Pronunciation: /īˈsäptərə/ EntomologyDefinition of Isoptera an order of insects that comprises the termites. Derivatives isopteran noun & adjective Origin:modern Latin (plural), from Greek isos 'equal' + pteron 'wing'Isoptera in other Oxford dictionaries Definition of Isoptera in the British & World English dictionary