magnesium hydroxide


: a slightly alkaline crystalline compound Mg(OH)2 used especially as a laxative and gastric antacid

Examples of magnesium hydroxide in a Sentence

Recent Examples on the Web If your symptoms are mild and intermittent, opt for an over-the-counter that neutralizes the acid with with bismuth subsalicylate, calcium carbonate, or magnesium hydroxide. Sarah Bradley, Verywell Health, 28 July 2022 Two other cars involved in the derailment were carrying magnesium hydroxide, but CSX said they were not breached. Natalie Kainz, NBC News, 23 Nov. 2023 The active ingredient in this chew is magnesium hydroxide. Jenny Friedman, Ms, Parents, 3 Aug. 2023 Each twist-up deodorant in the range retails at $22, and contains hydrating coconut oil as a base for soft and supple underarms, along with a blend of superfruit elderberry extract, magnesium hydroxide, and potato starch, to keep odor and wetness at bay. Tiffany Dodson, Harper's BAZAAR, 19 Jan. 2023 Hugh MacIntyre assists student Mikaela Ermanovics in preparing an experiment on how magnesium hydroxide affects phytoplankton in Dartmouth, Nova Scotia. Yasmine Salam, NBC News, 11 Feb. 2023 Planetary Technologies intends to extract magnesium hydroxide out of the waste left behind by the old asbestos mine. Yasmine Salam, NBC News, 11 Feb. 2023 Tapioca starch also absorbs moisture to minimize sweat (but does so without clogging the pores), while antibacterial magnesium hydroxide fights bacteria that cause odor. Dallas News, 30 Nov. 2022 Deodorant is made with magnesium hydroxide and baking soda, which work together to neutralize odor-causing bacteria. Dallas News, 30 Nov. 2022

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'magnesium hydroxide.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

circa 1909, in the meaning defined above

Time Traveler
The first known use of magnesium hydroxide was circa 1909

Dictionary Entries Near magnesium hydroxide

Cite this Entry

“Magnesium hydroxide.” Dictionary, Merriam-Webster, Accessed 13 Apr. 2024.

Kids Definition

magnesium hydroxide

: a weak alkaline compound used especially as a laxative and against acid in the stomach

Medical Definition

magnesium hydroxide

: 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

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