deoxyribonuclease Syllabification: (de·ox·y·ri·bo·nu·cle·ase)Pronunciation: /dēˌäksēˌrībōˈn(y)o͞oklēˌās, -ˌāz/Definition of deoxyribonuclease noun Biochemistry another term for DNase.deoxyribonuclease in other Oxford dictionaries Definition of deoxyribonuclease in the British & World English dictionary