Definition of RNA virus
: a virus (such as a paramyxovirus or a retrovirus) whose genome consists of RNA
First Known Use of rna virus
Medical Definition of RNA virus
: a virus (as a paramyxovirus or a retrovirus) whose genome consists of RNA Hepatitis C remains largely a mystery; it is one of the RNA viruses, which are less well understood than are DNA viruses, and it has defied efforts to grow it in a test tube.—Nancy Shute, U.S. News & World Report, 22 June 1998
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