1. A polyhedron with six faces.
Usage: Most commonly refers to a cube, which is a regular hexahedron with six square faces.

Examples

• A cube is the most familiar example of a hexahedron.
• The hexahedron has six faces, twelve edges, and eight vertices.
• In geometry class, students learned to calculate the volume of a regular hexahedron.
• A rectangular prism is also a type of hexahedron.
• The hexahedron is one of the five Platonic solids when it takes the form of a cube.