noun
- Acute (sometimes fatal) lobar pneumonia caused by bacteria of a kind first recognized after an outbreak of the disease at an American Legion convention in Philadelphia in 1976; characterized by fever and muscle and chest pain and headache and chills and a dry cough. .
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| APA | WordNet. (2010). legionnaires' disease. Retrieved September 28, 2026, from http://smartdefine.org/legionnaires%27_disease/definitions/1245675 |
| Chicago | WordNet. 2010. "legionnaires' disease" http://smartdefine.org/legionnaires%27_disease/definitions/1245675 (accessed September 28, 2026). |
| Harvard | WordNet 2010, legionnaires' disease, Smart Define, viewed 28 September, 2026, <http://smartdefine.org/legionnaires%27_disease/definitions/1245675>. |
| MLA | WordNet. "legionnaires' disease" 23 October 2010. Web. 28 September 2026. <http://smartdefine.org/legionnaires%27_disease/definitions/1245675> |