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magnesium hydroxide
noun
: 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
Antacids Antacids that contain aluminum and/or magnesium hydroxide may decrease the ability to absorb iron or folic acid.
—Amber J. Tresca, Verywell Health, 21 Oct. 2024
Airborne features magnesium in the forms of magnesium oxide and magnesium sulfate, while Emergen-C uses magnesium hydroxide and magnesium carbonate.
—Megan Nunn, Verywell Health, 10 Oct. 2024
Key ingredients: coconut oil, elderberry extract, magnesium hydroxide, potato starch | Aluminum-free: yes | Scent: 4 scent options (Sandstone, Glossier You, Orange Blossom Neroli, Unscented)
Frequently Asked Questions
What are antiperspirants?
—Sarah Madaus, Allure, 4 Oct. 2024
In contrast, the company’s plan to pour magnesium hydroxide into the U.K.’s scenic St. Ives Bay has been met with suspicion and protests by some local officials and residents.
—Bywarren Cornwall, science.org, 14 Aug. 2024
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
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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.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/magnesium%20hydroxide. Accessed 21 Nov. 2024.
Kids Definition
magnesium hydroxide
noun
: a weak alkaline compound used especially as a laxative and against acid in the stomach
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
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