This page provides all possible meanings and translations of the word oocysts
U.S. National Library of MedicineRate this definition:(0.00 / 0 votes)
Zygote-containing cysts of sporozoan protozoa. Further development in an oocyst produces small individual infective organisms called SPOROZOITES. Then, depending on the genus, the entire oocyst is called a sporocyst or the oocyst contains multiple sporocysts encapsulating the sporozoites.