any minute, flagellate protozoan of the genus Trypanosoma, parasitic in the blood or tissues of humans and other vertebrates, usually transmitted by insects, often causing serious diseases, as African sleeping sickness in humans, and many diseases in domestic animals.
Origin of trypanosome
1900–05; < Greektrȳpano- (combining form of trȳ́panon borer) + -some3
Related formstry·pan·o·so·mal, try·pan·o·som·ic[trih-pan-uh-som-ik, trip-uh-nuh-]/trɪˌpæn əˈsɒm ɪk, ˌtrɪp ə nə-/, adjective
Any of various parasitic flagellate protozoans of the genus Trypanosoma that can cause serious diseases, such as sleeping sickness. They are transmitted by the bite of certain insects, such as tsetse flies.