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ferrous sulfate

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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.

Origin of ferrous sulfate

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

green vitriol

noun
  1. ferrous sulfate.
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
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.

green vitriol

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