green-vitriol

green vitriol

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ferrous sulfate

noun Chemistry, Pharmacology.
a bluish-green, crystalline, saline-tasting, water-soluble heptahydrated solid, FeSO 4 ⋅7H 2 O, 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. 2014.
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World English Dictionary
green vitriol
 
n
another name for ferrous sulphate

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
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.
green vitriol  
See ferrous sulfate.
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