• synonyms


noun Chemistry.
  1. a salt of the hypothetical ferric acid, H2FeO4.
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Origin of ferrate

1850–55; < Latin ferr(um) iron + -ate2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for ferrate


  1. a salt containing the divalent ion, FeO 4 2– . Ferrates are derivatives of the hypothetical acid H 2 FeO 4
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Word Origin for ferrate

C19: from Latin ferrum iron
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

ferrate in Science


  1. A compound containing ferric oxide and another oxide. Ferrates are stable only in strongly alkaline conditions and impart a purple color to aqueous solutions.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.