pentakaidecahedron

Noun

pentakaidecahedron (plural pentakaidecahedra or pentakaidecahedrons)

1. Synonym of pentadecahedron.
   • The lacunar pattern of this grain therefore includes six tetragonal and nine hexagonal faces. Relating this to polyhedrons, we find that no pentakaidecahedron with such a combination of faces can exist (see page 199).1935, R[oger] P[hilip] Wodehouse, “Angiospermae”, in Pollen Grains: Their structure, identification and significance in science and medicine, New York, N.Y.; London: McGraw-Hill Book Company, Inc....
   • The host structure is similar to that of the (n–C₄H₉)₄ N⁺C₆H₅COOH⁻·39.5 H₂O consisting of a tetragonal body-centered arrangement of groups of five face-sharing pentagonal dodecahedra interlinked by tetrakaidecahedra and pentakaidecahedra.1963, Lee Leiserson, William H. McCoy, “Branch of Inorganic Chemistry”, in Saline Water Conversion Report for 1963, Washington, D.C.: United States Department of the Interior, page 4, column 1

   Synonyms:

   pentadecahedron