noun. any of a group of picornaviruses that infect the gastrointestinal tract and can spread to other areas (especially the nervous system).
1. Adverb Many types of common cold viruses cause this infection, but virus types enterovirus, coxsackie and adenovirus are well known to cause a hemorrhagic conjunctivitis. 2. Noun, singular or mass Once infected, they develop an immunity to the specific virus that caused it, but it is possible to be infected again by another virus within the enterovirus group.