tetradecahedral

From tetradeca- +‎ -hedral.

tetradecahedral (not comparable)

1. In the form of a tetradecahedron.
   • 1748, John Hill, A General Natural History: or, New and Accurate Descriptions of the Animals, Vegetables, and Minerals, of the Different Parts of the World; […], London: […] Thomas Osborne, […], page 121:

     The Selenitæ of this Genus conſiſt each of ſix ſides, that is, a top and bottom, and four Trapezia; but want the Rhombic ends which make the others decahedral or tetradecahedral; […].

   • 1792, “GRANATE, or Garnet”, in Encyclopædia Britannica; or, a Dictionary of Arts, Sciences, and Miscellaneous Literature, on a Plan Entirely New: […], volume VIII, Dublin: […] James Moore, […], page 104, column 2:

     The cryſtals are ſometimes irregular, but frequently aſſume rhomboidal, tetradecahedral, and almoſt all other regular forms.

   • 2017, Jeffrey H Williams, “Methane and other non-aromatic hydrocarbons: ethane, ethylene and acetylene”, in Crystal Engineering: How Molecules Build Solids (IOP Concise Physics), Morgan & Claypool, →ISBN, section 3 (Clathrates), page 8-12:

     Methane forms a structure I hydrate with two dodecahedral (12 vertices, thus 12 water molecules) and six tetradecahedral (14 water molecules) water cages per unit cell; […].

• tetrakaidekahedral