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cuproso-

cuproso- Chem.,
  (kjuːˈprəʊsəʊ)
  combining form of mod.L. cuprōsus cuprous.

1863–72 Watts Dict. Chem. II. 55 Aqueous cuproso-cupric Chloride. 1873Fownes' Chem. 399 The important ore, called copper-pyrites, is a cuproso-ferric sulphide.

Oxford English Dictionary

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