单词 | holohedral |
释义 | holohedral, a. Cryst.|hɒləʊˈhiːdrəl, -ˈhɛdrəl| [f. holo- + Gr. ἕδρα seat, base + -al1.] Of a crystal: Having the full number of planes required by the highest degree of symmetry belonging to its system.
1837Dana Min. i. (1844) 38 The holohedral and hemihedral forms may be separately considered. 1855W. A. Miller Chem. 103 Hemihedral forms..may be derived from a holohedral form, as the tetrahedron is from the octahedron. So holoˈhedrism, the condition or quality of being holohedral, crystallization in holohedral forms. holoˈhedron [cf. F. holoèdre], a holohedral crystal or form. (In mod. Dicts.) |

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