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copperas

 - 7 dictionary results

cop⋅per⋅as

  [kop-er-uhs]
Use copperas in a Sentence
–noun Chemistry.
ferrous sulfate.
Origin:
1400–50; late ME coperas, var. of ME coperose < ML (aqua) cuprōsa copperish (water). See copper 1 , -ose 1

ferrous sulfate

 
–noun Chemistry, Pharmacology.
a bluish-green, crystalline, saline-tasting, water-soluble heptahydrated solid, FeSO4·7H2O, used chiefly in the manufacture of other iron salts, in water purification, fertilizer, inks, pigments, tanning, photography, and in medicine in the treatment of anemia.
Also called copperas, green vitriol, iron vitriol, iron sulfate.

Origin:
1860–65
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To copperas
cop·per·as   (kŏp'ər-əs)   
n.  See ferrous sulfate.

[Middle English coperose, a metallic sulfate, from Old French, from Medieval Latin cuperōsa, probably short for *aqua cuprōsa, copper water, from Late Latin cuprum, copper; see copper1.]
ferrous sulfate  
n.  A greenish crystalline compound, FeSO4·7H2O, used as a pigment, fertilizer, and feed additive, in sewage and water treatment, and as a medicine in the treatment of iron deficiency. Also called copperas.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: cop·per·as
Pronunciation: 'käp-(&-)r&s
Function: noun
: a green hydrated ferrous sulfateFeSO4·7H2O used especially in making inks and pigments —used especially of commercial grades not to be used internally

Main Entry: ferrous sulfate
Function: noun
: an astringent iron salt obtained usually in pale green crystalline form FeSO4·7H2O and used inmedicine chiefly for treating iron-deficiency anemia
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Science Dictionary
ferrous sulfate  
A bluish-green crystalline compound that is used in sewage and water treatment, and as a pigment and fertilizer. It is also used in medicine to treat iron deficiency. Also called green vitriol. Chemical formula: FeSO4·7H2O.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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