A genus of viruses (family Flaviviridae) composed of the hog cholera virus and related viruses. [L. pestis, plague, + virus]
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Pes·ti·vi·rus 'pes-tə-.vī-rəs n a genus of single-stranded RNA viruses of the family Flaviviridae that includes the causative agents of bovine viral diarrhea and hog cholera
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Pes·ti·vi·rus (pesґtĭ-vi″rəs) [L. pestis plague + virus] mucosal disease viruses; a genus of viruses of the family Flaviviridae comprising bovine diarrhea virus, hog cholera virus, and border disease virus of sheep. pestiviral adjMedical dictionary. 2011.