#parallelepiped__parallelopiped__parallelepipedon__parallelopipedon  a prism whose bases are parallelograms
  supertype:  prism  a polyhedron with two congruent and parallel faces (the bases) and whose lateral faces are parallelograms
  subtype:  cuboid  a rectangular parallelepiped
  subtype:  rhombohedron  a parallelepiped bounded by six similar faces (either rhombuses or parallelograms)

No statement uses or specializes parallelepiped; click here to add one.