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词汇 dodecahedron
释义

Definition of dodecahedron in English:

dodecahedron

nounPlural dodecahedra, Plural dodecahedrons ˌdəʊdɛkəˈhiːdr(ə)nˌdoʊˌdɛkəˈhidrən
  • A three-dimensional shape having twelve plane faces, in particular a regular solid figure with twelve equal pentagonal faces.

    十二面体

    Example sentencesExamples
    • As well as constructions to divide a line in the golden ratio, Euclid gives applications such as the construction of a regular pentagon, an icosahedron and a dodecahedron.
    • The fifth regular polyhedron, the dodecahedron, was left over, so Plato proposed rather lamely that the god used it up for decorating the universe.
    • Dali also incorporated in the painting a huge dodecahedron (a twelve-faced Platonic solid in which each side is a pentagon) engulfing the supper table.
    • Finally, so as not to leave out the one remaining regular solid, he proposed that the dodecahedron represented the shape of the entire universe.
    • There is a fifth Platonic regular solid too: the dodecahedron, which has pentagonal (five-sided) faces.

Derivatives

  • dodecahedral

  • adjective
    • Fluorite from Dongshan occurs only as simple cubes consistently modified by small dodecahedral faces.
      Example sentencesExamples
      • They described a distorted 5.5 x 4-cm dodecahedral crystal of genthelvite from a small pegmatite near Stove Mountain.
      • Grossular occurred as greenish-gray to pale brown semitransparent dodecahedral crystals to 8 mm and also as a granular material making up a high percentage of the skarn.
      • Archaeologists have unearthed models of dodecahedra at several sites in Europe, including a dodecahedral model in Germany that had holes of different sizes puncturing its faces.
      • Sphalerite is cubic with crystals commonly tetrahedral or dodecahedral and frequently complex and distorted.

Origin

Late 16th century: from Greek dōdekaedron, neuter (used as a noun) of dōdekaedros 'twelve-faced'.

Rhymes

decahedron, octahedron, polyhedron, tetrahedron

Definition of dodecahedron in US English:

dodecahedron

nounˌdoʊˌdɛkəˈhidrənˌdōˌdekəˈhēdrən
  • A three-dimensional shape having twelve plane faces, in particular a regular solid figure with twelve equal pentagonal faces.

    十二面体

    Example sentencesExamples
    • As well as constructions to divide a line in the golden ratio, Euclid gives applications such as the construction of a regular pentagon, an icosahedron and a dodecahedron.
    • There is a fifth Platonic regular solid too: the dodecahedron, which has pentagonal (five-sided) faces.
    • The fifth regular polyhedron, the dodecahedron, was left over, so Plato proposed rather lamely that the god used it up for decorating the universe.
    • Finally, so as not to leave out the one remaining regular solid, he proposed that the dodecahedron represented the shape of the entire universe.
    • Dali also incorporated in the painting a huge dodecahedron (a twelve-faced Platonic solid in which each side is a pentagon) engulfing the supper table.

Origin

Late 16th century: from Greek dōdekaedron, neuter (used as a noun) of dōdekaedros ‘twelve-faced’.

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