Oncolysis /on·col·y·sis/ destruction or dissolution of a neoplasm.oncolyt´ic on·col·y·sis n. 1. The destruction of a tumor or tumor cells. 2. [more]Oncolysis - Community and Resources
The breakdown, or lysis, of a tumor. This can occur by mechanical means, chemicals, or infectious agents such as viruses. Oncolytic viruses do not lyse most normal cells.