It crystallises in the 4th (rhombic) system, and its lustre is vitreous.
The crystals are colourless tables, rhombic or hexagonal, according to the modifications produced principally in the acute angles.
Achenes various shades of brown to black, flattened or rhombic in section, obovoid, 1.5–2 mm.
The continuation of this curve, therefore, above 151 forms the stable fusion curve of rhombic sulphur (curve CD).
Above this temperature the rhombic changes into monoclinic; at lower temperatures the monoclinic changes into rhombic.
It crystallizes in the cubical system, often in beautiful octahedra and rhombic dodecahedra.
rhombic, Rhomboidal, Somewhat lozenge-shaped; obliquely four-sided.
Aragonite, a mineral formed of calcium carbonate crystallized in the rhombic system; specific gravity 2.94 (compare Calcite).
At this part the shaft is greatly flattened and the cross section becomes oblong or rhombic.
Autunite, a hydrous phosphate of uranium and calcium, crystallizing in the rhombic system in yellow plates.
rhombic rhom·bic (rŏm'bĭk)
Relating to the rhombencephalon.