legionella

noun
le·​gion·​el·​la | \ ˌlē-jə-ˈnel-ə How to pronounce legionella (audio) \

Medical Definition of legionella

1 capitalized : a genus of gram-negative rod-shaped bacteria (family Legionellaceae) that includes the causative agent (L. pneumophila) of Legionnaires' disease
2 plural legionellae\ -​ˌē\ also legionellas : a bacterium of the genus Legionella

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