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
Colcothar, kol′kō-thar, n. a dark-red iron peroxide formed by calcining copperas.
From Chambers's Twentieth Century Dictionary (part 1 of 4: A-D) 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
You may have raven grey, or duns of various shades, by boiling with the logwood a small quantity of alum and copperas.
From Blacker's Art of Fly Making, &c. Comprising Angling, & Dyeing of Colours, with Engravings of Salmon & Trout Flies by Blacker, William
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 Blacker, William
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
