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ferrous sulfate

noun Chemistry, Pharmacology.
  1. 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.
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Origin of ferrous sulfate

First recorded in 1860–65
Also called copperas, green vitriol, iron vitriol, iron sulfate.

green vitriol

noun
  1. ferrous sulfate.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for green vitriol

green vitriol

noun
  1. another name for ferrous sulphate
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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
green vitriol in Science

ferrous sulfate

  1. 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.
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green vitriol

  1. See ferrous sulfate.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.