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Medical Definition of Amoeba meleagridis
1. A protozoan flagellate (order Trichomonadida) parasitizing the intestine and liver of turkeys, chickens, and many other domestic and wild gallinaceous birds; it is nearly ubiquitous but rarely pathogenic in chickens; in the turkey, it causes histomoniasis. It is now considered to be in a family (Monocercomonadidae) that includes Dientamoeba. Synonym: Amoeba meleagridis. (05 Mar 2000)