Dictionary.com
Thesaurus.com

dodecahedron

American  
[doh-dek-uh-hee-druhn, doh-dek-] / doʊˌdɛk əˈhi drən, ˌdoʊ dɛk- /

noun

Geometry, Crystallography.
  • dodecahedrons,
    plural
  • dodecahedra
    plural
  1. a solid figure having 12 faces.


dodecahedron British  
/ ˌdəʊdɛkəˈhiːdrən /

noun

  1. a solid figure having twelve plane faces. A regular dodecahedron has regular pentagons as faces See also polyhedron

"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

dodecahedron Scientific  
/ dō′dĕk-ə-hē′drən /
  • dodecahedrons
    plural
  1. A polyhedron having twelve faces.


Other Word Forms

Derived Forms

Inflected Forms

Nouns


Etymology

Origin of dodecahedron

First recorded in 1560–70; dodeca- + -hedron


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Some creative types have also taken it one step further and produced YouTube crafting tutorials using a plastic model of a dodecahedron.

From BBC ● May 4, 2024

Granted, the shape is dramatically different than the one that existed when minor-league ball was shuttered last summer — like a square becoming a dodecahedron.

From Seattle Times ● Dec. 2, 2020

A better-known way to define it now starts with a dodecahedron, a shape made of twelve pentagons.

From Scientific American ● Jun. 4, 2017

This involves two different polyhedra with the same volume: an irregular dodecahedron with pentagonal faces, possessing tetrahedral symmetry, and a tetrakaidecahedron, which has two hexagonal and 12 pentagonal faces possessing antiprismatic symmetry.

From Slate ● Jul. 22, 2015

Instead of sharing these important mathematical discoveries, the Pythagoreans suppressed the knowledge of V2 and the dodecahedron.

From "Cosmos" by Carl Sagan

So far, there is not much to do in the eleVR world, apart from exploring tilings made of geometric shapes such as pentagons and dodecahedra.

From Nature ● Mar. 20, 2017

The garnet sometimes forms good dodecahedra, but may occur as rounded grains, and encloses quartz, rutile, kyanite, and other minerals very frequently.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10 "Echinoderma" to "Edward" by Various

Many other dodecahedra exist as crystal forms, for which see Crystallography.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 5 "Dinard" to "Dodsworth" by Various

The object is one of only 33 dodecahedrons found in Britain, and the first to have been discovered in the Midlands.

From BBC ● May 4, 2024

The object is one of only 33 dodecahedrons ever found in Britain, and the first to have been discovered in the Midlands.

From BBC ● Apr. 29, 2024

He built each piece originally in tiny paper tetrahedrons, octahedrons or dodecahedrons.

From Time Magazine Archive

Iron pyrites is commonly of a bright brass-yellow color, and is found crystallized in cubes, dodecahedrons and many other forms.

From Golden Days for Boys and Girls Volume VIII, No 25: May 21, 1887 by James Elverson

Random Word

Spin the wheel and learn a new word!

Get a word

Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training