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polyhedron Syllabification: pol·y·he·dron
Pronunciation: /ˌpälēˈhēdrən/

Definition of polyhedron in English:

noun (plural polyhedrons or polyhedra-ˈhēdrə)

A solid figure with many plane faces, typically more than six.
Example sentences
  • 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).


Pronunciation: /ˌpälēˈhēdrəl/
Example sentences
  • The particles may have any shape or size, but they are generally spherical, ellipsoidal, polyhedral, or irregular in shape.
  • 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.
  • 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.
Pronunciation: /-ˈhēdrik/
Example sentences
  • Limited-complexity polyhedric methods are presented for estimating the parameters of a linear model from bounded-error data.
  • The polyhedric method was invented by Paul Feautrier of the PRiSM laboratory of University of Versailles (France).


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

Words that rhyme with polyhedron

decahedron, dodecahedron, octahedron, tetrahedron
Definition of polyhedron in:
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