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[mer-kyoo r-uh s, mur-kyer-uh s] /mərˈkyʊər əs, ˈmɜr kyər əs/
adjective, Chemistry
containing univalent mercury, Hg +1 or Hg 2 +2 .
Origin of mercurous
1860-65; mercur(y) + -ous Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for mercurous
  • Mixtures of barium oxide with mercurous or nickel oxide also react vigorously with hydrogen sulfide in air.
  • mercurous compounds are less toxic than mercuric compounds.
  • Mixtures with mercurous or nickel oxide react vigorously with hydrogen sulfide in air.
British Dictionary definitions for mercurous


of or containing mercury in the monovalent state; denoting a mercury(I) compound. Mercurous salts contain the divalent ion Hg²2+
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
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mercurous in Medicine

mercurous mer·cu·rous (mər-kyur'əs, mûr'kyər-əs)
Relating to or containing mercury, especially with a valence of 1.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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mercurous in Science
  (mər-kyr'əs, mûr'kyər-əs)   
Containing mercury, especially mercury with a valence of 1. Compare mercuric.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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