cu·​prous | \ ˈkyü-prəs How to pronounce cuprous (audio) , ˈkü- \

Definition of cuprous

: of, relating to, or containing copper with a valence of one

Examples of cuprous in a Sentence

Recent Examples on the Web For the first time, researchers have used light to control the shape of nanoparticles and create micron-size hollow shells from crystals of cuprous oxide (copper and oxygen). Leto Sapunar, Scientific American, "Scientists Sculpt Nanoparticle Shells with Light," 22 Feb. 2020 Illuminating a cuprous oxide microcrystal excites its electrons, which join with copper ions to form regular copper atoms. Leto Sapunar, Scientific American, "Scientists Sculpt Nanoparticle Shells with Light," 22 Feb. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cuprous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of cuprous

1669, in the meaning defined above

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The first known use of cuprous was in 1669

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Cite this Entry

“Cuprous.” Dictionary, Merriam-Webster, Accessed 2 Jul. 2020.

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