copperas
Americannoun
noun
Etymology
Origin of copperas
1400–50; late Middle English coperas, variant of Middle English coperose < Medieval Latin ( aqua ) cuprōsa copperish (water). See copper 1, -ose 1
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Early mine operators realized that they could also extract copper from copperas.
From Washington Times ● Jul. 3, 2017
I sometimes spray with lime and copperas, and have not been very successful.
From The Apple by Various
Honey sophisticated with glucose containing copperas as an impurity is turned of an inky colour by liquids containing tannin, as tea.
From Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 6 "Home, Daniel" to "Hortensius, Quintus" by Various
Green olive may be made with a little more copperas and verdigris.
From Blacker's Art of Fly Making, &c. Comprising Angling, & Dyeing of Colours, with Engravings of Salmon & Trout Flies by William Blacker
Premises.—Cellars, yards, stables, gutters, privies, cesspools, water-closets, drains, sewers, etc. should be frequently and liberally treated with copperas solution.
From A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases by Various
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