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prism science definition

  1. A geometric solid whose bases are congruent polygons lying in parallel planes and whose sides are parallelograms.
  2. A solid of this type, often made of glass with triangular ends, used to disperse light and break it up into a spectrum.
  3. A crystal form having 3, 4, 6, 8, or 12 faces parallel to the vertical axis and intersecting the horizontal axis.

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