magnesium oxide

noun

: 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

The minerals transformed into alkaline magnesium oxide and calcium silicate, both of which react quickly with acidic CO2 in the air. —New Atlas, 2 Mar. 2025

The American Gastroenterological Association has recommended magnesium oxide, among several other treatments, for chronic idiopathic constipation.2 The use of magnesium for constipation should be discussed with your primary healthcare provider. 2. —Jennifer Lefton, Ms, Rd/n, Cnsc, Fand, Verywell Health, 26 Feb. 2025

The crystal emits light at 1064 nm, and then the frequency is doubled (and the wavelength halved) in either a magnesium oxide or lithium niobate cavity, yielding an output of 532 nm. —IEEE Spectrum, 26 Feb. 2010

However, Karp emphasizes that there are some benefits to magnesium oxide. —Jennifer Shanker, Flow Space, 6 Feb. 2025

Word History

First Known Use

1866, in the meaning defined above

Rhymes for magnesium oxide

• acetaldehyde
• acetanilide
• arabinoside
• cycloheximide
• cyclophosphamide
• diethylamide
• dinucleotide
• ferricyanide
• ferrocyanide
• glutaraldehyde
• glyceraldehyde
• hydroperoxide

Kids Definition

magnesium oxide

noun

: a white earthy solid that consists of magnesium and oxygen and is used especially in fertilizers and rubber, as a mild laxative, and against acid in the stomach

Medical Definition

magnesium oxide

noun

: 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