nonahedron

English

Etymology

From nona- +‎ -hedron.

Noun

nonahedron (plural nonahedra or nonahedrons)

1. (mathematics) Any of the 2,606 topologically distinct convex polyhedra that have nine faces.
   • 2003 July 1, S. A. Pellice, D. P. Fasce, R. J. J. Williams, “Properties of Epoxy Networks Derived from the Reaction of Diglycidyl Ether of Bisphenol A with Polyhedral Oligomeric Silsesquioxanes Bearing OH-Functionalized Organic Substituents”, in Journal of Polymer Science, volume 41, number 13, part B (Polymer Physics), →ISSN, page 1451:

     A polyhedral oligomeric silsesquioxane (POSS), consisting mainly of a mixture of octahedra, nonahedra, and decahedra with bulky and flexible organic substituents, with three secondary hydroxyls per organic group, was used to modify epoxy networks produced by the homopolymerization of diglycidyl ether of bisphenol A in the presence of benzyldimethylamine.

Synonyms

• enneahedron

Related terms

• nonahedral

Translations

polyhedron with nine faces — see enneahedron

References

• Mathworld