amastigote Any of the bodies representing the morphologic (leishmanial) stage in the life cycle of all trypanosomatid protozoa resembling the typical adult form of members of the genus Leishmania, in which the oval or round cell has a nucleus, kinetoplast, and basal body but lacks a free-flowing flagellum, the flagellum being either very short or entirely absent. BTO:0000062 BrendaTissueOBO Leishman-Donovan body aflagellate form leishmanial form micromastigote spheromastigote trypanosomoid form