Medical Dictionary


noun ba·cil·lus \bə-ˈsil-əs\
plural ba·cil·li \-ˌī also -ē\

Medical Definition of BACILLUS

a capitalized :  a genus of rod-shaped gram-positive endospore-producing usually aerobic bacteria of the family Bacillaceae that include many saprophytes and some parasites (as B. anthracis of anthrax) b :  any bacterium of the genus Bacillus; broadly :  a straight rod-shaped bacterium
:  bacterium; especially :  a disease-producing bacterium
May 22, 2015
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