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单词 polyhedron
释义

Definition of polyhedron in English:

polyhedron

nounPlural polyhedra, Plural polyhedrons ˌpɒlɪˈhiːdrənˌpɑliˈhidrən
Geometry
  • A solid figure with many plane faces, typically more than six.

    Example sentencesExamples
    • He submitted his first paper on this topic then, encouraged by Legendre and Malus, he submitted a further paper on polygons and polyhedra in 1812.
    • Kepler connected the planetary orbits with the five regular polyhedra, or Platonic solids.
    • Plato believed that atoms have the shapes of regular polyhedra: cubes, tetrahedrons, octahedrons, and so on.
    • The icosahedron is one of only five regular convex polyhedrons, the symmetric ‘Platonic solids’ that fascinated the ancient Greeks (the cube is another).
    • For example, fair dice don't have to be in the shape of regular polyhedra, such as cubes, icosahedra, and so on.

Derivatives

  • polyhedral

  • adjective ˌpɒlɪˈhiːdrəlˌpɑliˈhidrəl
    Geometry
    • And the sphere that houses the new Hayden Planetarium is both beautiful and astrophysically relevant - something that cannot be said of pyramids, cubes, or other polyhedral forms.
      Example sentencesExamples
      • The route started by Euler with his polyhedral formula was followed by a little known mathematician Antoine-Jean Lhuilier who worked for most of his life on problems relating to Euler's formula.
      • The particles may have any shape or size, but they are generally spherical, ellipsoidal, polyhedral, or irregular in shape.
      • Microscopically, the lesion consisted of stellate to polyhedral cells distributed singly and arranged in single or multiple layers around small vascular channels and deposited in an abundant myxoid matrix.
      • Placental-site trophoblastic tumor is composed predominantly of polyhedral and vacuolated, multinucleated intermediate trophoblastic cells that infiltrate the myometrium with extensive deposition of fibrinoid material.
  • polyhedric

  • adjective
    Geometry
    • The polyhedric method was invented by Paul Feautrier of the PRiSM laboratory of University of Versailles (France).
      Example sentencesExamples
      • Limited-complexity polyhedric methods are presented for estimating the parameters of a linear model from bounded-error data.

Origin

Late 16th century: from Greek poluedron, neuter (used as a noun) of poluedros 'many-sided'.

Rhymes

decahedron, dodecahedron, octahedron, tetrahedron
 
 

Definition of polyhedron in US English:

polyhedron

nounˌpälēˈhēdrənˌpɑliˈhidrən
Geometry
  • A solid figure with many plane faces, typically more than six.

    Example sentencesExamples
    • He submitted his first paper on this topic then, encouraged by Legendre and Malus, he submitted a further paper on polygons and polyhedra in 1812.
    • Plato believed that atoms have the shapes of regular polyhedra: cubes, tetrahedrons, octahedrons, and so on.
    • Kepler connected the planetary orbits with the five regular polyhedra, or Platonic solids.
    • The icosahedron is one of only five regular convex polyhedrons, the symmetric ‘Platonic solids’ that fascinated the ancient Greeks (the cube is another).
    • For example, fair dice don't have to be in the shape of regular polyhedra, such as cubes, icosahedra, and so on.

Origin

Late 16th century: from Greek poluedron, neuter (used as a noun) of poluedros ‘many-sided’.

 
 
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更新时间:2024/12/23 15:51:57