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diplohedron
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diplohedron
diplohedron Cryst. (dɪpləʊˈhiːdrən) [f. diplo- + Gr. ἕδρα seat, base: cf. trihedron.] A crystalline form contained by twenty-four trapezoidal planes with two sides equal; a dyakis-dodecahedron.1878 Lawrence Cotta's Rocks Class. 211 The large diplohedrons of quartz are very much rounded off. 1895 Sto...
Oxford English Dictionary
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dyakis-dodecahedron
dyakis-dodecahedron Cryst. (ˈdaɪəkɪsˌdəʊdɪkəˈhiːdrən) [f. Gr. δυάκις twice, f. δύο two + dodecahedron.] A crystalline form contained by twenty-four trapezoidal planes having two sides equal; = diplohedron, diploid.1881 H. Bauerman Textbk. Syst. Min. 54 The same relation holds good with its hemihedra...
Oxford English Dictionary
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diploid
diploid, n. and a. (ˈdɪplɔɪd) [f. Gr. διπλό-ος double + εἶδος form.] A. n. a. Cryst. A solid belonging to the isometric system, contained within twenty-four trapezoidal planes; = diplohedron. b. Biol. A diploid organism. B. adj. Biol. [a. G. diploid (E. Strasburger 1905, in Jahrb. f. wissensch. Bot....
Oxford English Dictionary
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