rhombohedron Cryst.
(rɒmbəʊˈhiːdrən)
Pl. -hedra. Also rhomboedron.
[f. Gr. ῥόµβος rhombus + ἕδρα base.]
A solid figure bounded by six equal rhombs; a crystal of this form.
| 1836 M. Somerville Connex. Phys. Sci. xiv. 128 All the hundreds of forms of carbonate of lime split into six-sided figures called rhombohedrons. 1850 Daubeny Atom. The. vi. (ed. 2) 171 The metals arsenic and antimony both crystallizing in the form of an acute rhomboedron. 1880 J. W. Legg Bile 11 Glycocoll forms large rhombohedra which are easily soluble in water. |