do·​deca·​he·​dron | \ (ˌ)dō-ˌde-kə-ˈhē-drən How to pronounce dodecahedron (audio) \
plural dodecahedrons or dodecahedra\ (ˌ)dō-​ˌde-​kə-​ˈhē-​drə How to pronounce dodecahedra (audio) \

Definition of dodecahedron

: a solid having 12 plane faces

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Other Words from dodecahedron

dodecahedral \ (ˌ)dō-​ˌde-​kə-​ˈhē-​drəl How to pronounce dodecahedral (audio) \ adjective

Examples of dodecahedron in a Sentence

Recent Examples on the Web

This show was originally installed at Oakville Galleries, in Oakville, Ontario, on the outer walls of a dodecahedron, a 12-sided structure. Cate Mcquaid,, "Flattening time’s tides; a ‘Maid’ made in the shade," 30 May 2018 Stark’s pieces are dodecahedrons, and in one, cutouts of a clock face tick the hours away. Cate Mcquaid,, "Trains of thought in arresting video artworks," 16 May 2018 They are defined by symmetry, and the Greeks knew that there were only five possibilities meeting the criteria: the tetrahedron, cube, octahedron, dodecahedron and icosahedron. Eugenia Cheng, WSJ, "Lessons of the Möbius Bagel," 10 Aug. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'dodecahedron.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of dodecahedron

circa 1570, in the meaning defined above

History and Etymology for dodecahedron

Greek dōdekaedron, from dōdeka- + -edron -hedron

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Time Traveler for dodecahedron

The first known use of dodecahedron was circa 1570

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