'Polythalamous' definitions:

Definition of 'Polythalamous'

From: GCIDE
  • Polythalamous \Pol`y*thal"a*mous\, a. [Poly- + Gr. ? a chamber.] (Zool.) Many-chambered; -- applied to shells of Foraminifera and cephalopods. See Illust. of Nautilus. [1913 Webster]