| legionnaire's disease or legionnaires' disease | |
| —n | |
| a serious, sometimes fatal, infection, caused by the bacterium Legionella pneumophila, which has symptoms similar to those of pneumonia: believed to be spread by inhalation of contaminated water vapour from showers and air-conditioning plants | |
| [C20: after the outbreak at a meeting of the American Legion at Philadelphia in 1976] | |
| legionnaires' disease or legionnaires' disease | |
| —n | |
| [C20: after the outbreak at a meeting of the American Legion at Philadelphia in 1976] | |
| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |