rhabdomyolysis Syllabification: (rhab·do·my·ol·y·sis)Pronunciation: /ˌrabdōˌmīˈäləsis/Definition of rhabdomyolysis noun Medicine the destruction of striated muscle cells; (especially in horses) azoturia. Origin: 1950s: from Greek rhabdos 'rod' + myo- + -lysisrhabdomyolysis in other Oxford dictionaries Definition of rhabdomyolysis in the British & World English dictionary