| 释义 |
hemiprism Cryst.|ˈhɛmɪprɪz(ə)m|
[hemi-.]
A pair of parallel faces, parallel to the vertical axis of the crystal in the triclinic system (in which two such pairs constitute a prism).
1864Dana in Webster, Hemiprism, a form, in the monoclinic and triclinic systems of crystallization, that comprises but one face of a prism and its opposite. 1882A. H. Green Phys. Geol. (ed. 3) 70 The prisms will be Hemiprisms.
Hence hemipriˈsmatic a., of the nature of a hemiprism.
1837Dana Min. (1844) 324 Hemi-prismatic Kouphone-Spar. 1879Rutley Study Rocks x. 87 In both systems there are hemiprismatic cleavages. |