transnational Syllabification: (trans·na·tion·al)Pronunciation: /transˈnaSHənl, tranz-/Definition of transnational adjective extending or operating across national boundaries:transnational advertising agencies noun a large company operating internationally; a multinational. Derivatives transnationalismPronunciation: /-ˌizəm/ noun transnationally adverb transnational in other Oxford dictionaries Definition of transnational in the British & World English dictionary