Apicomplexa(redirected from Apicomplexia)
A phylum of the subkingdom Protozoa, which includes the class Sporozoea and the subclasses Coccidia and Piroplasmia, characterized by the presence of an apical complex.
[L. apex, pl. apicis, tip, summit, + complexus, woven together]
A phylum of the kingdom Protista (formerly a division of protozoa called Sporozoa); named for a complex of cell organelles (apical microtubule complex) at the apex of the sporozoite form that can penetrate host cells. It includes the medically important genera Plasmodium, Toxoplasma, Cryptosporidium, and Isospora.