octadecahedron

plural octadecahedra · plural octadecahedrons

1. geometryA polyhedron with eighteen faces.

   In fact the structure of 2 can be related to the octadecahedron and the pentacapped trigonal prism in an interesting fashion

   1986, Dick Alan Nagaki, page 20

   1 more example

   The cell structure was considered to consist of spherical holes but for the purposes of calculation, the cells were assumed to be octadecahedra. ln this model, a compressive force along the principal axis of the octadecahedron and parallel to.

   1974, International Polymer Science and Technology, page 202

   Synonyms: octakaidecahedron