copperas definition

  • noun:
    • See ferrous sulfate.
    • Ferrous sulfate.
    • Green vitriol, or sulphate of iron; an eco-friendly crystalline substance, of an astringent style, used in making ink, in dyeing black colored, as a tonic in medicine, etc. It is made on a sizable scale by the oxidation of metal pyrites. Called also ferrous sulphate.
    • Green vitriol, the sulphate of metal, or ferrous sulphate, FeSO4.7H2O, a salt of a peculiar astringent taste as well as numerous colors, green, gray, yellow, or whitish, but more often green.
    • See ferrous sulfate.
    • Ferrous sulfate.
    • Green vitriol, or sulphate of iron; a green crystalline substance, of an astringent taste, used in making ink, in dyeing black colored, as a tonic in medicine, etc. It really is made on a big scale because of the oxidation of metal pyrites. Called in addition ferrous sulphate.
    • Green vitriol, the sulphate of metal, or ferrous sulphate, FeSO4.7H2O, a salt of a peculiar astringent taste as well as various colors, green, grey, yellowish, or whitish, but much more usually green.

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  • Sentence for "copperas"
    • Though often a brilliant colored mineral,…
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  • Cross Reference for "copperas"
  • Variant for "copperas"
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