Legionnaires' bacillus
noun
Le·gion·naires' bacillus
ˌlē-jə-ˈna(ə)rz-, -ˈne(ə)rz- 
: a bacterium of the genus Legionella (L. pneumophila) that causes Legionnaires' disease
Cite this Entry
“Legionnaires' bacillus.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Legionnaires%27%20bacillus. Accessed 10 Mar. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share