Noun
(mycology, archaic) A reproductive cell in certain fungi. [from 19th c.]
(biology) A thick-walled spore in the lifecycle of some parasitic protozoans that develops into sporozoite. [from 20th c.]
Source: en.wiktionary.orgThe sporozoites escape from the oocyst and migrate within the body of the vector to the salivary glands where they are injected into the new vertebrate host when the insect vector feeds again. Source: Internet
The fertilized macrogamete forms a zygote that in its turn forms an oocyst that is normally released from the body. Source: Internet
The male gametocyte produces a large number of gametes and the zygote gives rise to an oocyst, which is the infective stage. Source: Internet