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 dodecahedron (audio) \

Definition of dodecahedron

: a solid having 12 plane faces

Other Words from dodecahedron

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

Examples of dodecahedron in a Sentence

Recent Examples on the Web Among the artifacts recovered is a rare Roman dodecahedron, or hollow copper object possibly used as a weapon or measuring device, as scholar Michael Guggenberger wrote in a 2013 Mathematical Intelligencer article. Isis Davis-marks, Smithsonian Magazine, 18 Dec. 2020 Now Jayadev Athreya, David Aulicino and Patrick Hooper have shown that an infinite number of such paths do in fact exist on the dodecahedron. Quanta Magazine, 31 Aug. 2020 Now, a trio of mathematicians has resolved one of the most basic questions about the dodecahedron. Quanta Magazine, 31 Aug. 2020 The dodecahedron symbolized all the heavenly bodies — the stars and planets, each perfect in shape and movement. Quanta Magazine, 16 June 2020 Here, the walls are decorated simply with some abstract decals, and bare light bulbs caged in metal dodecahedrons hang from the ceiling. San Francisco Chronicle, 29 Nov. 2019 This show was originally installed at Oakville Galleries, in Oakville, Ontario, on the outer walls of a dodecahedron, a 12-sided structure. Cate Mcquaid,, 30 May 2018 Stark’s pieces are dodecahedrons, and in one, cutouts of a clock face tick the hours away. Cate Mcquaid,, 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, 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

Time Traveler

The first known use of dodecahedron was circa 1570

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Dictionary Entries Near dodecahedron

dodecahedral cleavage



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Cite this Entry

“Dodecahedron.” Dictionary, Merriam-Webster, Accessed 28 Nov. 2021.

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