单词 | di-hexahedral |
释义 | † di-hexahedraladj. Crystallography. Obsolete. Having twice six faces: see quot. 1816. ΚΠ 1816 R. Jameson Treat. External Characters Minerals (ed. 2) 198 Di-hexahedral,..when it is a six-sided prism, having three planes on the extremities. Example, Di-hexahedral felspar..which is a broad six-sided prism, bevelled on the extremities, the bevelling planes set on two opposite lateral edges, and on each of the extremities, one of the angles, formed by the meeting of the bevelling planes with the lateral edges, and on which they are set, truncated. This entry has not yet been fully updated (first published 1896; most recently modified version published online March 2021). < adj.1816 |
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