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polycystina

polycystina


  1  definition  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Polycystina  \Pol`y*cys*ti"na\,  n.  pl  [NL.  See  {Poly-},  and 
  {Cyst}.]  (Zo["o]l.) 
  A  division  of  Radiolaria  including  numerous  minute  marine 
  species.  The  skeleton  is  composed  of  silica,  and  is  often 
  very  elegant  in  form  and  sculpture.  Many  have  been  found  in 
  the  fossil  state.