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.

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dodecahedron British  

/ ˌdəʊdɛkəˈhiːdrən /

noun

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

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dodecahedron Scientific  

/ dō′dĕk-ə-hē′drən /

dodecahedrons plural

1. A polyhedron having twelve faces.

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Other Word Forms

Derived Forms

• dodecahedral
  adjective

Inflected Forms

noun

• dodecahedra
  plural
• dodecahedrons
  plural

Etymology

Origin of dodecahedron

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

Example Sentences

“Yes, it was delicious, wasn’t it?” agreed the pleased Dodecahedron, wiping the gravy from several of his mouths.

From "The Phantom Tollbooth" by Norton Juster

And by the time he’d finished the sentence, the cavern, the miners, and the Dodecahedron had vanished, leaving just the four of them standing in the Mathemagician’s workshop.

From "The Phantom Tollbooth" by Norton Juster

“NOT IMPORTANT!” roared the Dodecahedron, turning red with fury.

From "The Phantom Tollbooth" by Norton Juster

“So you shall,” announced the Dodecahedron, who appeared from nowhere with his arms full.

From "The Phantom Tollbooth" by Norton Juster

“I’m afraid it has to be,” the Dodecahedron replied, leaping onto the back of the car.

From "The Phantom Tollbooth" by Norton Juster