Dictionary.com
Thesaurus.com
Showing results for copperas. Search instead for moppers.

copperas

American  
[kop-er-uhs] / ˈkɒp ər əs /

noun

Chemistry.
  1. ferrous sulfate.


copperas British  
/ ˈkɒpərəs /

noun

  1. a less common name for ferrous sulphate

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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 am tired of nosing drains and buying copperas and hounding the latent plumber that he adjust the water-pipes.

From Rosemary and Rue by Amber

Buy at a druggist's four ounces of the best blue Aleppo nut-galls; half an ounce of green copperas; and half an ounce of clean, white gum-arabic.

From The Ladies' Guide to True Politeness and Perfect Manners or, Miss Leslie's Behaviour Book by Leslie, Eliza

Sprays April 1, April 30, and June 1, with London purple, copperas, Paris green, and Bordeaux mixture.

From The Apple by Various

Among them was Cornelius Devoz, to whom was granted the privilege of "mining and digging in our Realm of England for allom and copperas."

From De Re Metallica, Translated from the First Latin Edition of 1556 by Agricola, Georgius

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "copperas" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com