bacillus

noun ba·cil·lus \ bə-ˈsi-ləs \

Definition of bacillus

plural bacilli play \-ˌlī also -lē\
1 :any of a genus (Bacillus) of rod-shaped gram-positive usually aerobic bacteria producing endospores and including many saprophytes and some parasites (such as B. anthracis of anthrax); broadly :a straight rod-shaped bacterium
2 :bacterium; especially :a disease-producing bacterium

Recent Examples of bacillus from the Web

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Origin and Etymology of bacillus

New Latin, from Medieval Latin, small staff, rod, diminutive of Latin baculus staff, alteration of baculum


BACILLUS Defined for English Language Learners

bacillus

noun

Definition of bacillus for English Language Learners

  • : a straight rod-shaped bacterium that requires oxygen for growth; also : a bacterium that causes disease


Medical Dictionary

bacillus

noun ba·cil·lus \ bə-ˈsil-əs \

medical Definition of bacillus

plural bacilli \-ˌī also\
1 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
2 :bacterium; especially :a disease-producing bacterium


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