\Rhom`bo*he"dral\, a. (Geom. & Crystallog.)
Related to the rhombohedron; presenting the form of a
rhombohedron, or a form derivable from a rhombohedron;
relating to a system of forms including the rhombohedron and
scalenohedron.

{Rhombohedral iron ore} (Min.) See {Hematite}.

{Rhombohedral system} (Crystallog.), a division of the
   hexagonal system embracing the rhombohedron,
   scalenohedron, etc.