Definition of polyhedron in English:

polyhedron

Line breaks: poly|he¦dron
Pronunciation: /ˌpɒlɪˈhiːdrən
 
, -ˈhɛd-/

noun (plural polyhedra /-drə/ or polyhedrons)

Geometry
A solid figure with many plane faces, typically more than six.
More 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).

Origin

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

Derivatives

polyhedral

adjective
More 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.

polyhedric

adjective
More 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).

Definition of polyhedron in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day animalcule
Pronunciation: ˌanəˈmalˌkyo͞ol
noun
a microscopic animal