PARALLELEPIPED

[par.al.lel.e.pi.ped] n [Gk parallelepipedon, fr. parallelos + epipedon plane surface, fr. neut. of epipedos flat, fr. epi- epi- + pedon ground; akin to L ped-, pes foot--more at foot] (1570): a 6-faced polyhedron all of whose faces are parallelograms lying in pairs of parallel planes