haplohedral, a. Cryst.
(hæpləʊˈhiːdrəl)
[f. haplo- + Gr. ἕδρα seat, base + -al1.]
Applied to a system or form in which each normal bears only one face.
| 1878 Gurney Crystallogr. 54. 1895 Story-Maskelyne Crystallogr. v. 105 Where for each of its origin-planes the system or form belonging to it has only one plane extant parallel to the origin-plane, the system or form will be termed haplohedral. |