a sporozoan in the active feeding stage of its life cycle
A developmental form during the blood stage of malaria parasites. After merozoites have invaded the red blood cell, they develop into trophozoites (sometimes, early trophozoites are called "rings" or "ring stage parasites"); trophozoites develop into schizonts.
the motile feeding stage of a protozoal parasite; or vegetative state of a protozoan
The active, motile feeding stage of a protozoan parasite (Sporozoa class).
A protozoan in a feeding stage, as opposed to a reproductive or resting stage.
A trophozoite is the activated, feeding stage in the life cycle of protozoan parasites such as the malaria-causing Plasmodium falciparum (the opposite of the trophozoite state is the thick-walled cyst form).