he·ma·to·zo·an or chiefly Brit hae·ma·to·zo·an -'zō-ən n a blood-dwelling animal parasite
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he·ma·to·zo·an (he″mə-to-) (hem″ə-to-zoґən) [hemato- + Gr. zōon animal] 1. pertaining to or caused by animal parasites living in the host's blood. Called also hematozoal, hematozoic, and hemozoic. 2. any animal parasite living in the host's blood. Called also hematozoon and hemozoon.Medical dictionary. 2011.