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单词 green copperas
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green copperas
b. Protosulphate of iron: more fully green copperas.
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the world > matter > chemistry > elements and compounds > metals > specific elements > sulphur > [noun] > compounds > sulphates > of iron
green vitriolc1400
green copperasc1503
vitriol of Mars1678
vitriol of iron1753
c1503 R. Arnold Chron. f. lxxxixv/1 Coporose blank ij.d'. Coporose vert at vis' viijd'.
1565 Act 8 Eliz. c. 11 §3 No Person..shall dye..black, any Cap..but only with Copperas and Gall.
1577 in W. Greenwell Wills & Inventories Registry Durham (1860) II. 414 A hundrethe and a halff of grene copperous.
1607 B. Jonson Volpone Prol. sig. A4v All gall, and coppresse, from his inke, he drayneth. View more context for this quotation
1646 Sir T. Browne Pseudodoxia Epidemica 336 Inke..made, by copperose cast upon a decoction or infusion of galls. View more context for this quotation
1681 J. Chetham Angler's Vade Mecum ii. 7 Half a pound of green coperas.
1728 E. Chambers Cycl. Copperas, or Coperas, a Mineral, form'd in Copper-Mines, and which is properly a Kind of Vitriol.
1832 G. R. Porter Treat. Manuf. Porcelain & Glass 114 The red colour used by the Chinese is made from common green vitriol or copperas.
1876 D. Page Adv. Text-bk. Geol. (ed. 6) xiv. 252 Sufficiently pyritous to be used in the manufacture of copperas and sulphuric acid.
extracted from copperasn.
green copperas
green copperas n. see copperas n. 1b.
extracted from greenadj.n.1
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