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mercuric oxide

noun, Chemistry
a slightly crystalline, water-soluble, poisonous compound, HgO, occurring as a coarse, orange-red powder (red mercuric oxide) or as a fine, orange-yellow powder (yellow mercuric oxide) used chiefly as a pigment in paints and as an antiseptic in pharmaceuticals. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for mercuric oxide
  • Explosion of mercuric oxide may occur with friction or application of heat.
  • mercuric oxide button cells once were widely used in hearing aids but now are prohibited under federal law.
  • The two exceptions are mercuric oxide batteries and button cell batteries.
British Dictionary definitions for mercuric oxide

mercuric oxide

a soluble poisonous substance existing in red and yellow powdered forms: used as pigments. Formula: HgO Systematic name mercury(II) oxide
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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