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单词 melanochroite
释义

melanochroiten.

Origin: A borrowing from German. Etymon: German Melanochroit.
Etymology: < German Melanochroit (R. Hermann 1833, in Ann. der Physik u. Chem. 28 162) < ancient Greek μελανόχροος dark-complexioned (see Melanochroi n.) + German -it -ite suffix1. Compare French mélanochroïte (1840). N.E.D. (1906) gives the pronunciation as (melănokrōu·əit) /mɛlənəʊˈkrəʊaɪt/.
Mineralogy. Obsolete.
= phoenicochroite n.
ΘΚΠ
the world > the earth > minerals > types of mineral > chromates > [noun] > lead chromate
red lead of Siberia1788
red lead ore1788
melanochroite1835
phoenicochroite1849
1835 Rec. Gen. Sci. 1 273 Melanochroite.—This mineral is found in..the Uralian Mountains, in limestone.
1857 J. D. Dana Man. Mineral. (new ed.) 284 Melanochroite is another chromate of lead, containing 23.64 of chromic acid, and having a dark red colour.
This entry has been updated (OED Third Edition, June 2001; most recently modified version published online December 2018).
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n.1835
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