Adriatic Syllabification: (A·dri·at·ic)Pronunciation: /ˌādrēˈatik/Translate Adriatic | into French | into German | into Italian | into Spanish Definition of Adriatic adjective of or relating to the region comprising the Adriatic Sea and its coasts and islands. noun (the Adriatic) the Adriatic Sea or its coasts and islands. Adriatic in other Oxford dictionaries Definition of Adriatic in the British & World English dictionary