SINCE 1828
Koch's bacillus
noun
\ˈkōks-,
ˈkäch-əz-
\
ˈkäch-əz-
\
variants:
or Koch bacillus \ˈkōk-,
ˈkäch-
\
ˈkäch-
\
Medical Definition of Koch's bacillus
: a bacillus of the genus Mycobacterium (M. tuberculosis) that causes human tuberculosis
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