[mer-kyoo r-uh s, mur-kyer-uh s]

adjective Chemistry.

containing univalent mercury, Hg+1 or Hg2+2.

Origin of mercurous

First recorded in 1860–65; mercur(y) + -ous Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for mercurous

Historical Examples of mercurous

British Dictionary definitions for mercurous



of or containing mercury in the monovalent state; denoting a mercury(I) compound. Mercurous salts contain the divalent ion Hg² 2 +
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

mercurous in Medicine


[mər-kyurəs, mûrkyər-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.

mercurous in Science


[mər-kyurəs, mûrkyər-əs]

Containing mercury, especially mercury with a valence of 1. Compare mercuric.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.