Source : Webster's Revised Unabridged Dictionary (1913)

Polycyttaria \Pol`y*cyt*ta"ri*a\, n. pl. [NL., fr. Gr. poly`s
   many + ?, dim. fr. ? a hollow vessel.] (Zo["o]l.)
   A division of Radiolaria. It includes those having one more
   central capsules.