dodecahedron

American  

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

noun

Geometry, Crystallography.

PLURAL

dodecahedrons, dodecahedra

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 /

PLURAL

dodecahedrons

1. A polyhedron having twelve faces.

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Other Word Forms

• dodecahedral adjective

Etymology

Origin of dodecahedron

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

Example Sentences

"There are other sizes of dodecahedron in existence which could be more portable to carry if the army was on the move," Dr Foyle countered.

From BBC

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

From BBC

You start out with a simple solid — most frequently a dodecahedron, or a solid with twelve pentagonal faces — and then form the star’s points by extruding each edge.

From New York Times

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

These are the five convex polyhedra—tetrahedron, cube, octahedron, dodecahedron, and icosahedron—that are made of congruent regular polygons.

From Scientific American