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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

object, physical object go
a tangible and visible entity

whole, unit go
an assemblage of parts that is regarded as a single entity

living thing, animate thing go
a living (or once living) entity

organism, being go
a living thing that has (or can develop) the ability to act or function independently

microorganism, micro-organism go
any organism of microscopic size

protoctist go
any of the unicellular protists

protozoan, protozoon go
any of diverse minute acellular or unicellular organisms usually nonphotosynthetic

sporozoan
parasitic spore-forming protozoan

noun.animal

15 Subcategories

sporozoite go
one of the minute active bodies into which sporozoans divide in one stage of their life cycle
trophozoite go
a sporozoan in the active feeding stage of its life cycle
merozoite go
a cell that arises from the asexual division of a parent sporozoan during its life cycle
coccidium, eimeria go
parasitic on the digestive epithelium of vertebrates and higher invertebrates
gregarine go
vermiform protozoans parasitic in insects and other invertebrates
haemosporidian go
minute protozoans parasitic at some stage of the life cycle in blood cells of vertebrates including many pathogens
plasmodium, Plasmodium vivax, malaria parasite go
parasitic protozoan of the genus Plasmodium that causes malaria in humans
haemoproteid go
related to malaria parasite and having a phase in the viscera of various birds
leucocytozoan, leucocytozoon go
parasitic in birds
piroplasm go
minute parasite of red blood cells of mammals transmitted by a tick and causing diseases of domestic animals
sarcosporidian, sarcocystidean, sarcocystieian go
parasite of the muscles of vertebrates
haplosporidian go
parasite in invertebrates and lower vertebrates of no known economic importance
actinomyxidian go
parasites of worms
microsporidian go
parasite of arthropods and fishes that invade and destroy host cells
myxosporidian go
mostly parasitic in fishes and including various serious pathogens