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magnesium oxide

noun

, Chemistry.


magnesium oxide

noun

  1. 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: MgO Also calledmagnesia
“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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Word History and Origins

Origin of magnesium oxide1

First recorded in 1905–10
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Compare Meanings

How does magnesium oxide compare to similar and commonly confused words? Explore the most common comparisons:

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Example Sentences

It can be prepared just like magnesium oxide, but is more often made by burning the metal.

The lid of a biscuit box just in front of the frame does very well to catch the white magnesium oxide formed by burning.

Magnesium oxide, sometimes called magnesia or magnesia usta, resembles lime in many respects.

It is virtually a compound of the two oxides, aluminum oxide and magnesium oxide.

The cement shall not contain more than 1.75% of anhydrous sulphuric acid, nor more than 4% of magnesium oxide.

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