magnesium oxide

noun

Definition of magnesium oxide

: a white highly infusible compound MgO used especially in refractories, cements, insulation, and fertilizers, in rubber manufacture, and in medicine as an antacid and mild laxative

Examples of magnesium oxide in a Sentence

Recent Examples on the Web This form is more expensive but more bioavailable than magnesium oxide. The Salt Lake Tribune, 9 June 2022 Magnesi-Om is a magnesium supplement that provides magnesium oxide, which is a less bioavailable form of magnesium. The Salt Lake Tribune, 9 June 2022 Ford notes the main abrasives in it are baking soda and magnesium oxide, which are rounded. Kirbie Johnson, Allure, 1 June 2022 Experts have since argued that using magnesium oxide to neutralize acidic water doesn’t work. Palabra, oregonlive, 21 Mar. 2022 The other difference is, if the planet is big enough, magnesium oxide — which is another component of the mantle — can undergo that phase transition. Quanta Magazine, 15 June 2021 The one made for the Volvo trunk consisted of two layers of carbon fiber infused with iron oxide and magnesium oxide, separated by an insulating layer. Daniel Oberhaus, Wired, 6 Nov. 2020 That reaction would leave magnesium oxide powder, which when spread thin would rapidly react with CO2 from the atmosphere, re-forming magnesite, completing a cycle that could be repeated over and over. Robert F. Service, Science | AAAS, 3 Sep. 2020 Lime plaster coatings or magnesium oxide boards have to be applied to anything touching hempcrete, or the lime will calcify it and lose its ability to absorb and release water. Adam Popescu, New York Times, 29 Jan. 2018 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'magnesium oxide.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of magnesium oxide

1866, in the meaning defined above

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Time Traveler for magnesium oxide

Time Traveler

The first known use of magnesium oxide was in 1866

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Dictionary Entries Near magnesium oxide

magnesium nitrate

magnesium oxide

magnesium oxychloride cement

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Statistics for magnesium oxide

Last Updated

12 Aug 2022

Cite this Entry

“Magnesium oxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/magnesium%20oxide. Accessed 13 Aug. 2022.

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More Definitions for magnesium oxide

magnesium oxide

noun

Medical Definition of magnesium oxide

: a white highly infusible compound MgO used especially in refractories, cements, insulation, and fertilizers, in rubber manufacture, and in medicine as an antacid and mild laxative

More from Merriam-Webster on magnesium oxide

Britannica.com: Encyclopedia article about magnesium oxide

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