(kok-sid' -e-um) [coccus; pi., coccidia]. A genus of protozoans, by some referred to as the socalled psorosperms. See Psoro- sperm. C. oviforme, has been found in intestinal epithelium and in the liver of man, and often in the liver of the rabbit. True coccidia are nonmotile cell-parasites. C. sarkolytus, the name given by Adamkie- wicz to the socalled parasite of carcinoma.