- Polythalamous
- Polythalamous Pol`y*thal"a*mous, a. [Poly- + Gr. ? a chamber.] (Zo["o]l.) Many-chambered; -- applied to shells of Foraminifera and cephalopods. See Illust. of {Nautilus}. [1913 Webster]
The Collaborative International Dictionary of English. 2000.