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merosymmetry
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merosymmetry
merosymmetry Cryst. (mɛrəʊˈsɪmɪtrɪ) [f. mero-1 + symmetry.] The condition or quality of being merohedral. So merosyˈmmetrical a. = merohedral.1875 Chem. News 19 Mar. 121 Such partially developed forms Mr. Maskelyne designated as mero-symmetrical forms. Ibid., The varieties of mero-symmetry that a cr...
Oxford English Dictionary
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holosymmetry
holosymmetry Cryst. (hɒləʊˈsɪmɪtrɪ) [f. holo- + symmetry.] Same as holohedrism; opp. to merosymmetry. So holosyˈmmetric, holosyˈmme trical adjs. = holohedral.1895 Story-Maskelyne Crystallogr. §137 A holo-symmetrical form in any system will be the term applied to a form in which all the faces require...
Oxford English Dictionary
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mero-
▪ I. mero-1 (ˈmɛrəʊ) before a vowel mer-, combining form of Gr. µέρος ‘part, fraction’, occurring in various scientific and technical terms; sometimes opposed to holo-. In terms of Crystallography (merohedral, merosymmetry, etc.), it denotes that a crystal or crystalline form is deficient in the num...
Oxford English Dictionary
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tetarto-
tetarto- (tɪˈtɑːtəʊ) combining form of Gr. τέταρτος fourth (cf. tetra-), in scientific terms belonging chiefly to crystallography. teˌtartoˈhedral a. [Gr. ἕδρα base], having one fourth of the number of faces required by the highest or holohedral degree of symmetry belonging to its system; hence teˌt...
Oxford English Dictionary
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holo-
holo- (hɒləʊ) before a vowel hol-, combining form of Gr. ὅλος ‘whole, entire’, occurring in various scientific and technical terms, for the more important of which see their alphabetical places; sometimes opposed to hemi- or mero-. In Crystallography, denoting that a crystal or crystalline form has ...
Oxford English Dictionary
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