bettong Syllabification: (bet·tong)Pronunciation: /bəˈtôNG, -ˈtäNG/Definition of bettong noun a short-nosed rat kangaroo found in Australia. Family Potoroidae: two genera, in particular Bettongia, and several species Origin: early 19th century: from Dharukbettong in other Oxford dictionaries Definition of bettong in the British & World English dictionary