[tris.oc.ta.he.dron] n [Gk tris thrice + E octahedron--more at ter-] (ca. 1847): a solid (as a crystal) having 24 congruent faces meeting on the edges of a regular octahedron
TRISOCTAHEDRON
Meaning of TRISOCTAHEDRON in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012