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leishmaniasis leish·man·i·a·sis (lēsh'mə-nī'ə-sĭs)
An infection caused by the flagellated protozoa of the genus Leishmania transmitted to humans by bloodsucking sand flies.
A disease, such as kala-azar caused by flagellated protozoa of the genus Leishmania.
An infection or disease caused by any of the flagellate protozoans of the genus Leishmania, transmitted to humans and animals by bloodsucking sand flies and characterized by skin ulcerations or an acute illness marked by fever, anemia, and enlargement of the liver and spleen.