单词 | prismatid |
释义 | † prismatidadj.n. Crystallography. Obsolete. rare. A. adj. Designating a crystalline form consisting of three or more faces parallel to an axis. Cf. prism n. 5. ΚΠ 1895 N. Story-Maskelyne Crystallogr. vii. §302 The designations of..the horizontal prismatid forms as domes, the vertical one as a prism, have already been given in article 109. B. n. A crystalline form of this kind. ΚΠ 1895 N. Story-Maskelyne Crystallogr. vii. §328 Among the varieties of prismatids, of which the poles always lie in a zone perpendicular to the zone-circle of symmetry, two are especially noticeable. This entry has been updated (OED Third Edition, June 2007; most recently modified version published online June 2020). < adj.n.1895 |
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