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copper sulphate

noun

a copper salt found naturally as chalcanthite and made by the action of sulphuric acid on copper oxide. It usually exists as blue crystals of the pentahydrate that form a white anhydrous powder when heated: used as a mordant, in electroplating, and in plant sprays. Formula: CuSO 4

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Nearby words

  1. copper penny,
  2. copper pyrites,
  3. copper river,
  4. copper spot,
  5. copper sulfate,
  6. copper-bottomed,
  7. copper-fasten,
  8. copper-leaf,
  9. copper-sulfate method,
  10. copperah
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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