Deltohedron
Pronunciation : Del`to*he"dron
Part of Speech : n.
Etymology : [Gr. de`lta, the letter 'e`dra seat, base.] (Crystallog.)
Definition : Defn: A solid bounded by twelve quadrilateral faces. It is a hemihedral form of the isometric system, allied to the tetrahedron.
Source : Webster's Unabridged Dictionary, 1913