A cell or feeding stage in the life cycle of protozoa of the sporozoan type. In the Plasmodium species malarial parasites, the trophozoite develops from the merozoite and then splits into the schizont. Trophozoites that are left over from cell division can go on to form gametocytes.
This definition is at least in part based on: Anonymous (2015), Trophozoite (English). Medical Subject Headings. U.S. National Library of Medicine.