Johne's disease
noun
Joh·ne's disease ˈyō-nəz- 
: a chronic often fatal contagious enteritis of ruminants and especially of cattle that is caused by a bacterium (Mycobacterium paratuberculosis) and is characterized by persistent diarrhea and gradual emaciation
Word History
Etymology
Heinrich A. Johne †1910 German bacteriologist
First Known Use
1906, in the meaning defined above
Medical Definition
Johne's disease
noun
: a chronic often fatal enteritis especially of cattle that is caused by Johne's bacillus and is characterized by persistent diarrhea and gradual emaciation
called also paratuberculosis