# polyhedron

[ pol-ee-hee-druh n ]

/ ˌpɒl iˈhi drən /

### noun, plural pol·y·he·drons, pol·y·he·dra [pol-ee-hee-druh] /ˌpɒl iˈhi drə/.

a solid figure having many faces.

## QUIZZES

#### TAKE THIS QUIZ TO SEE WHAT YOU KNOW ABOUT 2ND-3RD GRADE VOCAB FROM BOOKS!

Are you learning new vocabulary? Or do you just have an interest in words? Either way, this quiz is for you.

Question 1 of 10

orchard

## Words nearby polyhedron

polygynous, polygyny, polygyria, polyhedral, polyhedral angle, polyhedron, polyhedrosis, polyhidrosis, polyhistor, polyhydramnios, polyhydric

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

## Example sentences from the Web for polyhedron

## British Dictionary definitions for polyhedron

polyhedron

/ (ˌpɒlɪˈhiːdrən) /

### noun plural -drons or -dra (-drə)

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

## Derived forms of polyhedron

polyhedral, adjective## Word Origin for polyhedron

C16: from Greek poluedron, from poly- + hedron side, base

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

## Scientific definitions for polyhedron

polyhedron

[ pŏl′ē-hē′drən ]

### Plural polyhedrons 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.

## Other words from polyhedron

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