green vitriol


Also found in: Medical, Encyclopedia, Wikipedia.

green vitriol

n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

green vitriol

n
(Elements & Compounds) another name for ferrous sulphate
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
Few of the reports related to the ferrous sulfate (green vitriol, FeS[O.sub.4] * 7[H.sub.2]O), even if it is very cheaper, because it is the byproducts of the fabricating processes for sulfuric acid ([H.sub.2]S[O.sub.4]) and titanium white (Ti[O.sub.2]) and also can be obtained from refining the coarse green vitriol.
He was later exposed as a hairdresser and dance master in the Isle of Manp Copperas Hill is named after the copperas - or green vitriol - dye works owned by Richard Hughes who became a mayor of Liverpool.
But when he mixed Dipple's potash with green vitriol (iron sulfate), according to one of his recipes, he got a brilliant blue colour.