One of the five types of regular polyhedra; it has 6 square faces, 12 edges and 8 vertices from each of which emanate 3 edges (which are perpendicular to one another). The cube is sometimes called a hexahedron.
The cube of a number $a$ is its third power $a^3$.
Cube. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Cube&oldid=31459