Polythalamia

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Polythalamia \Pol`y*tha*la"mi*a\, n. pl. [NL. See
     {Polythalamous}.] (Zool.)
     A division of Foraminifera including those having a
     manychambered shell.
     [1913 Webster]