What is "zoocyst"

Zoocyst \Zo"["o]*cyst\, n. [Zo["o]- + cyst.] (Biol.) A cyst formed by certain Protozoa and unicellular plants which the contents divide into a large number of granules, each of which becomes a germ.

n. A variety of encysted rhizopods resembling a sporocyst, except in the thickness and number of the protective layers.