Medical Dictionary

Legionnaires' bacillus

noun Le·gion·naires' bacillus \ ˌlē-jə-ˈna(ə)rz-, -ˈne(ə)rz- \

medical Definition of Legionnaires' bacillus

: a bacterium of the genus Legionella (L. pneumophila) that causes Legionnaires' disease

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