a disease of domesticated animals of central and southern Africa, caused by parasitic protozoa of the genus Trypanosoma transmitted by tsetse flies
Word origin
from Zulu u-nakane
nagana in American English
(nəˈgɑnə)
noun
an infectious disease affecting horses and cattle in tropical Africa, caused by a trypanosome (Trypanosoma brucei) transmitted by the bite of infected tsetse flies