from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Native sulphate of copper.

from the GNU version of the Collaborative International Dictionary of English

  • n. Native sulphate of copper. Cf. Blue vitriol, under blue.

from The Century Dictionary and Cyclopedia

  • n. Sulphate of copper, or blue vitriol. Also called cyanose, chalcanthite.


See cyanic. (Wiktionary)


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