copperas

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English[edit]

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Noun[edit]

copperas (uncountable)

  1. iron(II) sulfate.
    • 1843, Thomas Carlyle, Past and Present, book 2, ch. 6, Monk Samson
      […] what a change has introduced itself everywhere into human affairs! How human affairs shall now circulate everywhere not healthy life-blood in them, but, as it were, a detestable copperas banker’s ink;

Translations[edit]