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Medical Definition of Bradyzoite
1. A slowly multiplying encysted form of sporozoan parasite typical of chronic infection with Toxoplasma gondii. It has also been called a merozoite or zoite; the complex of bradyzoite's within an enclosing membrane has also been called a pseudocyst, though it is now regarded as a true cyst. Origin: brady-+ G. Zoe, life (05 Mar 2000)