decahedron

Dec`a*he"dron, n.; pl. E. Decahedrons, L. Decahedra. Etym: [Pref. deca- + Gr. 'e`dra a seat, a base, fr. 'e`zesthai to sit: cf. F. décaèdre.] (Geom.) Defn: A solid figure or body inclosed by ten plane surfaces. [Written also, less correctly, decaedron.]

---