: a slightly alkaline crystalline compound Mg(OH)2 used especially as a laxative and gastric antacid
Example Sentences
Recent Examples on the WebSans Unscented Solid deodorant is packed with the nontoxic, antibacterial agents zinc oxide and magnesium hydroxide. Corey Buhay, Outside Online, 23 Jan. 2020 This lightly fragranced option derived from natural ingredients, including magnesium hydroxide for odor control, will do the trick. Lauren Joseph, Forbes, 22 June 2021 What their research found is that a suspension of water and calcium hydroxide or magnesium hydroxide, which could be added into those pools, had the ability to stop acidification in its tracks. Sara Kiley Watson, Popular Science, 2 Nov. 2020
Word History
First Known Use
circa 1909, in the meaning defined above
Medical Definition
magnesium hydroxide
noun
: a slightly alkaline crystalline compound Mg(OH)2 that is obtained by hydration of magnesia or by precipitation (as from seawater by lime in the production of magnesium chloride) as a white nearly insoluble powder and is used chiefly in medicine as an antacid and laxative see milk of magnesia