a. [f. L. cupr-um copper + -OUS.] a. = CUPREOUS. b. In Chem., applied to compounds in which copper combines as a monad, as cuprous chloride Cu2 Cl2.

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1669.  W. Simpson, Hydrol. Chym., 29. You will find the Silver desert the Aqua fortis, precipitating upon the cuprous plates.

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1811.  A. T. Thomson, Lond. Disp. (1818), 149. Sugar is the antidote of cuprous poisons.

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1869.  Roscoe, Elem. Chem., 247. The ore is repeatedly roasted, in order partially to convert the cuprous sulphide into oxide.

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