HEXAHEDRON
hexahedron
(noun) any polyhedron having six plane faces
Source: WordNet® 3.1
Etymology
Noun
hexahedron (plural hexahedrons or hexahedra)
(geometry) A polyhedron with six faces. The regular hexahedron is the cube, and is one of the Platonic solids.
Source: Wiktionary
Hex`a*he"dron, n.; pl. E. Hexahedrons, L. Hexahedra. Etym: [Hexa- +
Gr. hexaèdre.] (Geom.)
Definition: A solid body of six sides or faces. Regular hexahedron, a
hexagon having six equal squares for its sides; a cube.
Source: Webster’s Unabridged Dictionary 1913 Edition