sonoluminescence Syllabification: (son·o·lu·mi·nes·cence)Pronunciation: /ˌsänōˌlo͞oməˈnesəns/Definition of sonoluminescence noun Physics luminescence excited in a substance by the passage of sound waves through it. Derivatives sonoluminescent adjective sonoluminescence in other Oxford dictionaries Definition of sonoluminescence in the British & World English dictionary