1740, from Italian mal'aria, from mala aria, literally "bad air," from mala "bad" (fem. of malo, from Latin malus; see mal-) + aria "air" (see air (n.1)). Probably first used by Italian physician Francisco Torti (1658-1741). The disease, now known to be mosquito-borne, once was thought to be caused by foul air in marshy districts. Replaced native ague.
malaria ma·lar·i·a (mə-lâr'ē-ə)
n.
An infectious disease characterized by cycles of chills, fever, and sweating, caused by the parasitic infection of red blood cells by a protozoan of the genus Plasmodium, which is transmitted by the bite of an infected female anopheles mosquito. Also called jungle fever, paludism, swamp fever.
An infectious disease caused by a parasite that is transmitted by the bite of an infected mosquito. Persons suffering from malaria experience periodic episodes of chills and fever.