leish·man·i·a·sis 
(lēsh′mə-nīə-sĭs)
(lēsh′mə-nīə-sĭs)n.
1. An infection caused by any of the flagellate protozoans of the genus Leishmania, transmitted to humans and animals by bloodsucking sandflies.
2. A disease, such as kala-azar or either of two clinically distinct ulcerative skin diseases, caused by flagellate protozoans of the genus Leishmania.
[New Latin Leishmania, genus of protozoans (after Sir William Boog Leishman (1865-1926), British medical officer) + -IASIS.]