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Medical Definition of Metacryptozoite
1. The exoerythrocytic stage that develops from merozoites formed by the first, or cryptozoite, generation; the cryptozoite and metacryptozoite generations comprise the primary exoerythrocytic stages of malaria development (prepatent period) prior to infection of red blood cells. Origin: meta-+ G. Kryptos, hidden, + zoon, animal (05 Mar 2000)