The Collaborative International Dictionary of English v.0.48:

Monozoa \Mon`o*zo"a\, n. pl. [NL., from Gr. mo`nos single +
   zo^,on an animal.] (Zool.)
   A division of Radiolaria; -- called also Monocyttaria. --
   Mon`o*zo"ic, a.
   [1913 Webster]