"Disease of cattle, other livestock, and occasionally humans caused by infection with bacteria of the genus Actinobacillus, typically characterized by suppurating nodules like those of actinomycosis but also seen as septicaemia in foals", Early 20th cent. From actino- + bacillus + -osis, after French actinobacillose.[actinobacillosis etymology, actinobacillosis origin, 英语词源]