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

“Right this way,” instructed the Dodecahedron, “and watch where you step.”

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

“All I meant was—” began Milo, but the Dodecahedron, overcome with emotion and shouting furiously, carried right on.

From "The Phantom Tollbooth" by Norton Juster

“We dig them and polish them right here,” volunteered the Dodecahedron, pointing to a group of workers busily employed at the buffing wheels; “and then we send them all over the world. Marvelous, aren’t they?”

From "The Phantom Tollbooth" by Norton Juster

“You’ll soon wear it out using it for everything,” replied the Dodecahedron.

From "The Phantom Tollbooth" by Norton Juster