Kattegat Syllabification: (Kat·te·gat)Pronunciation: /ˈkätəˌgät, ˈkatəˌgat/Definition of Kattegat a strait, 140 miles (225 km) long, between Sweden and Denmark. It is linked to the North Sea by the Skagerrak and to the Baltic Sea by the Øresund. Kattegat in other Oxford dictionaries Definition of Kattegat in the British & World English dictionary