R1H4O1M3B3O1H4E1D2R1O1N1
23 points
RHOMBOHEDRON is validvalid
a hexahedron with rhombic sides [n RHOMBOHEDRA, RHOMBOHEDRONS]
a parallelepiped whose faces are rhombuses [n RHOMBOHEDRA or RHOMBOHEDRONS]
a hexahedron with rhombic sides [n RHOMBOHEDRA, RHOMBOHEDRONS]
a parallelepiped whose faces are rhombuses [n RHOMBOHEDRA or RHOMBOHEDRONS]