# polyhedral

## polyhedral

[pol-ee-hee-druhl]
of, pertaining to, or having the shape of a polyhedron.

Origin:
1805–15; < Greek polýedr(os) many-based (see polyhedron) + -al1

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World English Dictionary
 polyhedron (ˌpɒlɪˈhiːdrən) —n , pl -drons, -dra a solid figure consisting of four or more plane faces (all polygons), pairs of which meet along an edge, three or more edges meeting at a vertex. In a regular polyhedron all the faces are identical regular polygons making equal angles with each other. Specific polyhedrons are named according to the number of faces, such as tetrahedron, icosahedron, etc [C16: from Greek poluedron, from poly- + hedron side, base] poly'hedral —adj

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American Heritage
Science Dictionary
 polyhedron   (pŏl'ē-hē'drən)  Pronunciation Key  Plural polyhedrons or polyhedra A three-dimensional geometric figure whose sides are polygons. A tetrahedron, for example, is a polyhedron having four triangular sides. ◇ A regular polyhedron is a polyhedron whose faces are all congruent regular polygons. The regular tetrahedron (pyramid), hexahedron (cube), octahedron, dodecahedron, and icosahedron are the five regular polyhedrons. Regular polyhedrons are a type of Archimedean solid. polyhedral adjective
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