Source : Webster's Revised Unabridged Dictionary (1913)

Sporocyst \Spo"ro*cyst\, n. [Gr. ? seed + ? bladder.]
   1. (Zo["o]l.) An asexual zooid, usually forming one of a
      series of larval forms in the agamic reproduction of
      various trematodes and other parasitic worms. The
      sporocyst generally develops from an egg, but in its turn
      produces other larv[ae] by internal budding, or by the
      subdivision of a part or all of its contents into a number
      of minute germs. See {Redia}.

   2. (Zo["o]l.) Any protozoan when it becomes encysted produces
      germs by sporulation.