\H[ae]m`a*to*zo"["o]n\, n.; pl. {H[ae]matozoa}.
[NL., fr. Gr. ?, blood + ? animal.] (Zo["o]l.)
A parasite inhabiting the blood; esp.:
(a) Certain species of nematodes of the genus {Filaria},
    sometimes found in the blood of man, the horse, the dog,
    etc.
(b) The trematode, {Bilharzia h[ae]matobia}, which infests
    the inhabitants of Egypt and other parts of Africa, often
    causing death.