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cuprous Line breaks: cu|prous
Pronunciation: /ˈkjuːprəs/

Definition of cuprous in English:


Of copper with a valency of one; of copper(I).
Example sentences
  • These reactions depend on the ability of the reducing sugar to convert cupric sulfate to cuprous oxide with a resulting color change.
  • The second is a group of cuprous [copper] oxide minerals, and ‘crepitus’ is an interesting medical word with two meanings that appear in the OED - with none in Webster's.
  • Under magnification, these altered surfaces do not exhibit the naturally occurring corrosion layers, such as red cuprous oxide and green, basic copper carbonate, that might be expected.


Mid 17th century: partly directly from late Latin cuprum 'copper' (reinforced by cupric) + -ous.

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