1. a transparent object with flat surfaces that separates white light into colors
Usage: optics
2. a solid geometric shape with two parallel identical ends and flat sides
Usage: geometry

Examples

• The glass prism split the sunlight into a beautiful rainbow.
• She held the crystal prism up to the window.
• The triangular prism refracted the light beam.
• We calculated the volume of the rectangular prism.
• The prism has six faces and eight vertices.
• Light enters the prism at one angle and exits at another.
• The pentagonal prism was difficult to construct.