Medical Definition of excoriation. 1: the act of abrading or wearing off the skin chafing and excoriation of the skin.
malaria. noun. 1  An infectious disease characterized by cycles of chills, fever, and sweating, caused by a protozoan of the genus Plasmodium in red blood cells, which is transmitted to humans by the bite of an infected female anopheles mosquito.
About Malaria. Malaria is a disease of the blood that is caused by the. Plasmodium parasite, which is transmitted from person. to person by a particular type of mosquito.