ent·amoeba \|ent+\noun Etymology: New Latin, from ent- + Amoeba 1.capitalized, in some classifications: a genus of parasitic amoebas (family Endamoebidae) that includes those members of the genus Endamoeba which are parasites of vertebrates — used chiefly in medical literature 2.alsoentameba: an endamoeba especially of a vertebrate • entamoebicalsoentamebicadjective