intergovernmental Syllabification: (in·ter·gov·ern·men·tal)Pronunciation: /ˌintərˌgəvər(n)ˈmentl/Definition of intergovernmental adjective of, relating to, or conducted between two or more governments:an intergovernmental conferenceDerivatives intergovernmentally adverb intergovernmental in other Oxford dictionaries Definition of intergovernmental in the British & World English dictionary