# Polyhedron Definition

pŏlē-hēdrən

polyhedra, polyhedrons

noun

A solid bounded by polygons.

American Heritage

A solid figure with usually more than six plane surfaces.

Webster's New World

(optics) A polyscope, or multiplying glass.

Wiktionary

other

Hyponyms.

Wiktionary

See also polyhedron.

Wiktionary

A three-dimensional geometric figure whose sides are polygons. A tetrahedron, for example, is a polyhedron having four triangular sides. &diamf3; 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.American Heritage Science

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## Other Word Forms of Polyhedron

### Noun

Singular:

polyhedron
Plural:

polyhedra, polyhedrons## Origin of Polyhedron

From New Latin, from Ancient Greek

*πολύεδρον*(poluedron), from*πολύς*(polus, “many") +*ἕδρα*(hedra, “seat"); compare French*polyèdre*.From Wiktionary

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