prism

  1. Noun.  (context, geometry) A polyhedron with parallel ends of the same size and shape, the other faces being parallelogram-shaped sides.
  2. Noun.  A transparent block in the shape of a prism (typically with triangular ends), used to split or reflect light.
  3. Noun.  A crystal in which the faces are parallel to the vertical axis.

This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.

This entry was last updated on RefTopia from its source on 3/20/2012.