Trīs-ŏc'ta-hē'dron, n.
n. [Gr. τρίς, thrice, and Eng. octahedron, q. v.] (Crystallog.) A solid bounded by twenty-four equal faces, three corresponding to each face of an octahedron. Dana.
n. [Gr. τρίς, thrice, and Eng. octahedron, q. v.] (Crystallog.) A solid bounded by twenty-four equal faces, three corresponding to each face of an octahedron. Dana.