英语释义
1. any virus of a family (Polyomaviridae and especially genus Polyomavirus) of double-stranded DNA viruses that induce tumors in specific mammals
2. a genus of double-stranded DNA viruses (family Polyomaviridae) that contain a single molecule of DNA, have a capsid composed of 72 capsomers, and induce tumors usually in specific mammals and that include simian virus 40 and the causative agent of progressive multifocal leukoencephalopathy
3. any of the genus Polyomavirus of double-stranded DNA viruses