# polyhedral

[pol-ee-hee-druh l]

- of, relating to, or having the shape of a polyhedron.

## Origin of polyhedral^{}

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

## Examples from the Web for polyhedral

### Historical Examples

#### A tumor of stellate or polyhedral cells in a matrix of mucin.

Surgery, with Special Reference to PodiatryMaximilian Stern

#### Suppose the polyhedral angle were concave, why would the proof not hold?

The Teaching of GeometryDavid Eugene Smith

#### Directly superposed to these we find cells which in shape are polyhedral.

Diseases of the Horse's FootHarry Caulton Reeks

#### In all such cases the relation to the polyhedral angle should be made clear.

The Teaching of GeometryDavid Eugene Smith

#### The angle between two planes is termed dihedral, between three trihedral, between any number more than three polyhedral.

## Word Origin and History for polyhedral

### adj.

1741, from polyhedron + -al (1).

Online Etymology Dictionary, © 2010 Douglas Harper

# polyhedron

[pŏl′ē-hē′drən]

- 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.

The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.