magnesium oxide

noun Chemistry.

Nearby words

  1. magnesium,
  2. magnesium arsenate,
  3. magnesium carbonate,
  4. magnesium hydroxide,
  5. magnesium light,
  6. magnesium peroxide,
  7. magnesium salicylate,
  8. magnesium silicate,
  9. magnesium sulfate,
  10. magnesium trisilicate

Origin of magnesium oxide

First recorded in 1905–10 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for magnesium oxide

magnesium oxide


a white tasteless substance occurring naturally as periclase: used as an antacid and laxative and in refractory materials, such as crucibles and fire bricks. Formula: MgOAlso called: magnesia
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

Medicine definitions for magnesium oxide

magnesium oxide


A white powdery compound having a high melting point (2,800°C), used in food packaging, cosmetics, and pharmaceuticals.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.