trisoctahedron

• POS: Noun
• HYPHEN: tris=oc=ta=he=dron

CIDE DICTIONARY

trisoctahedron, n. [Gr. thrice + FE. octahedron.].

 A solid of the isometric system bounded by twenty-four equal faces, three corresponding to each face of an octahedron.  [1913 Webster]

Tetragonal trisoctahedron, a trisoctahedron each face of which is a quadrilateral; called also trapezohedron and icositetrahedron. -- Trigonal trisoctahedron, a trisoctahedron each face of which is an isosceles triangle.