¦pärvō, ¦pȧvōˌ noun
Etymology: New Latin, from parv- + virus
1. : any of a family (Parvoviridae and especially genus Parvovirus ) of small single-stranded DNA viruses that include the causative agent of fifth disease
2. : a highly contagious febrile disease of dogs that is caused by a parvovirus (genus Parvovirus ) which may be a mutated form of the virus causing panleukopenia in cats and is marked by loss of appetite, lethargy, often bloody diarrhea and vomiting, and sometimes death