leucocytozoonosis
noun
leu·co·cy·to·zoo·no·sis
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plural leucocytozoonoses\ -ˌsēz
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Medical Definition of leucocytozoonosis
: a disease caused by infection of birds (as turkeys, chickens, ducks, and geese) by sporozoans of the genus Leucocytozoon transmitted by arthropods (as blackflies)