\Hex`a*he"dron\, n.; pl. E. {Hexahedrons}, L.
{Hexahedra}. [Hexa- + Gr. ? seat, base, fr. ? to sit: cf. F.
hexa[`e]dre.] (Geom.)
A solid body of six sides or faces.
{Regular hexahedron}, a hexagon having six equal squares for
   its sides; a cube.