Find the word definition

Wiktionary
pestivirus

n. Any of several viruses, of the genus (taxlink Pestivirus genus noshow=1), that infect cattle, sheep, pigs etc.

Wikipedia
Pestivirus

Pestivirus is a genus of viruses, in the family Flaviviridae. Viruses in the genus Pestivirus infect mammals, including members of the family Bovidae (which includes, but is not limited to, cattle, sheep, and goats) and the family Suidae (which includes various species of swine). There are currently four species in this genus including the type species Bovine viral diarrhea virus 1. Diseases associated with this genus include: hemorrhagic syndromes, abortion, fatal mucosal disease.