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词汇 decahedron
释义

Definition of decahedron in English:

decahedron

nounPlural decahedra, Plural decahedrons ˌdɛkəˈhiːdr(ə)nˌdɛkəˈhidrən
  • A solid figure with ten plane faces.

    十面体

    Example sentencesExamples
    • The cleaning layer has fully reticulated pores in a uniform network of substantially equilateral cells 34, such as tetrahedrons, truncated octahedrons and decahedrons.
    • Like the elongated shapes, the pentagons and hexagons are also characterized by a fivefold symmetry; we thus observe regular decahedrons and icosahedrons.
    • Now fold, crease, decorate, and glue your decahedron, following the same hints given on the tetrahedron page.
    • On this picture you will see two types of crystals: bigger ones - decahedrons - this is sugar and round ones - this is salt.
    • The two models in the top row are compounds of two decahedra each. The model in the bottom row left and right is a nonconvex octahedron, consisting of 4 squares and 4 triangles.

Derivatives

  • decahedral

  • adjective
    • The vertical ionization potentials of Al { sub 3 } X is larger than that of Al { sub 13 } in the decahedral structure while the opposite is the case with the icosahedral isomer.
      Example sentencesExamples
      • Decahedral clusters have a surface tension closer to that of fcc and hcp ones than to that of icosahedral ones, though both icosahedral and decahedral structures have five fold symmetry axis.
      • In fact, they have a truncated decahedral structure with a 5-fold symmetry.

Origin

Early 19th century: from deca- 'ten' + -hedron, on the pattern of words such as polyhedron.

Rhymes

dodecahedron, octahedron, polyhedron, tetrahedron

Definition of decahedron in US English:

decahedron

nounˌdekəˈhēdrənˌdɛkəˈhidrən
  • A solid figure with ten plane faces.

    十面体

    Example sentencesExamples
    • The two models in the top row are compounds of two decahedra each. The model in the bottom row left and right is a nonconvex octahedron, consisting of 4 squares and 4 triangles.
    • Like the elongated shapes, the pentagons and hexagons are also characterized by a fivefold symmetry; we thus observe regular decahedrons and icosahedrons.
    • On this picture you will see two types of crystals: bigger ones - decahedrons - this is sugar and round ones - this is salt.
    • Now fold, crease, decorate, and glue your decahedron, following the same hints given on the tetrahedron page.
    • The cleaning layer has fully reticulated pores in a uniform network of substantially equilateral cells 34, such as tetrahedrons, truncated octahedrons and decahedrons.

Origin

Early 19th century: from deca- ‘ten’ + -hedron, on the pattern of words such as polyhedron.

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