Any of a group of very small viruses, including the enteroviruses and the rhinoviruses, that infect animals and consist of RNA surrounded by an icosahedral protein shell.

• 小核糖核酸病毒一种微小病毒，包括肠道病毒和鼻病毒，对动物有感染作用，由环绕二十面体的蛋白壳层的核糖核酸病毒组成