Disease caused by the Gram-negative anaerobic bacterium Fusobacterium necrophorum, affecting domestic and wild animals and (less commonly) humans; an instance or form of this.
Necrobacillosis takes different forms in different species of animal, but often causes ulcerated necrotic lesions of the skin, sometimes leading to septicaemia and disseminated abscess formation. In humans the primary infection is usually in the oropharynx, and metastatic spread of the infection is common.
Early 20th century; earliest use found in 22nd Annual Reports Bureau Animal Industry 1905. From necro- + bacillus + -osis.