hemitropic

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hemitropic
hemitropic, a. Cryst. (hɛmɪˈtrɒpɪk) [f. as prec. + -ic.] Said of a composite or twin crystal: see quots.1886 F. W. Rudler in Geol. Mag. III. 267 The edges of the hemitropic lamellæ are too blurred to allow the exact angles to be taken. 1895 Story-Maskelyne Crystallogr. §154 Two crystals are said to ... Oxford English Dictionary
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hemitropous
heˈmitropous, a. [f. as prec. + -ous.] 1. Cryst. = hemitropic (Mayne Expos. Lex.). 2. Bot. Said of an ovule having a form intermediate between the anatropous and orthotropous, so that the hilum lies halfway between the base and the apex.1860 in Worcester (citing A. Gray.) Oxford English Dictionary
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hemitrope
hemitrope, a. and n. Cryst. (ˈhɛmɪtrəʊp) [ad. F. hémitrope (1801 Haüy), f. hemi- + Gr. -τροπος turning.] A. adj. = hemitropic.1805–17 R. Jameson Char. Min. (ed. 3) 225 Hemitrope..that is, one-half turned round, when it is composed of two halves of one and the same crystal, of which the one-half appe... Oxford English Dictionary
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macled
macled, ppl. a. (ˈmæk(ə)ld) Also mackled. [f. macle + -ed.] a. Of a crystal: Hemitropic. b. Marked like chiastolite (Webster Suppl. 1880). c. Her. = mascled (Webster 1897).1822 Cleaveland Mineral. & Geol. II. 793 Macled Crystal, a hemitrope crystal is sometimes thus called. a 1852 Macgillivray Nat. ... Oxford English Dictionary
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macle
▪ I. macle (ˈmæk(ə)l) See also mascle. [a. F. macle, ad. L. macula spot, mesh.] 1. Cryst. A hemitropic or twin crystal. Also attrib. [After Romé de L'Isle's use of F. macle, 1783.]1801 De Bournon's Acc. certain Minerals in Phil. Trans. XCI. 185 Whence results a kind of macle, the form of which is a ... Oxford English Dictionary
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