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Definition of picornavirus in English English dictionary
- Any of a group of RNA viruses, of the family Picornaviridae, many of which are pathogenic
- a group of single-strand RNA viruses with a protein coat
- Any of a group of the smallest known animal viruses. (Pico refers to their small size, rna to their core of RNA.) This group of spheroidal viruses includes viruses that attack the vertebrate intestinal tract and often invade the central nervous system as well (such as polioviruses), viruses that infect tissues in the vertebrate nose (rhinoviruses), and the virus agent of foot-and-mouth disease