mag·ne·sium | \mag-ˈnē-zē-əm, -zhəm\

Definition of magnesium 

: a silver-white malleable ductile light metallic element that occurs abundantly in nature and is used in metallurgical and chemical processes, in photography, signaling, and pyrotechnics because of the intense white light it produces on burning, and in construction especially in the form of light alloys — see Chemical Elements Table

Examples of magnesium in a Sentence

Recent Examples on the Web

Additional amounts of magnesium, B-complex vitamins, B-12, biotin, glutathione, zinc and anti-nausea drug Zofran are also barreling through my bloodstream. Craig Hlavaty, Houston Chronicle, "Feeling the drip, drip, drip of the mobile IV craze," 13 June 2018 Tap water has all kinds of things in it that can affect your skin, such as fluoride, calcium, and magnesium. Dr. Leslie Baumann, miamiherald, "How to use a skin cleanser and see results," 3 July 2018 After three to eight days, the magnesium degrades, allowing the device to float to the surface where researchers can recover it. Jason Daley, Smithsonian, "Researchers Record the Sounds of the Elusive Narwhal," 15 June 2018 Better regulate your blood pressure: The magnesium content assists with muscle contraction and cognition too. Jaclyn London, Ms, Rd, Cdn, Good Housekeeping, "It's Official: Cauliflower Is Just as Good for You as Colorful Veggies," 31 May 2018 The fire in the supplier plant lingered and was difficult to contain because the magnesium that ignited couldn't be extinguished with water. Bloomberg,, "Ford temporarily shuts down F-series truck production due to fire at parts supplier," 10 May 2018 These include calcium, magnesium, vitamin D, several B vitamins, vitamin A, vitamin K, potassium, iodine, selenium, borate, zinc, manganese, molybdenum, beta-carotene, and iron. Korin Miller, Allure, "Do You Need to Take a Multivitamin? Here's What Nutritionists Say," 3 May 2018 The salts, a longtime home remedy for aches and pains, are a natural compound of magnesium and sulfate. Kathi Santora,, "Remedy Wellness offers flotation therapy as unconventional approach to pain relief," 25 May 2018 Well, a 2016 study on 2,000 women suggested that the association between ovarian cancer and talcum powder comes from talc — a mineral made up of magnesium, silicon, and oxygen, that absorbs moisture — not asbestos., "Johnson & Johnson Owes $4.69 Billion In Another Ovarian Cancer Case," 13 July 2018

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

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First Known Use of magnesium

1812, in the meaning defined above

History and Etymology for magnesium

New Latin, from magnesia

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Statistics for magnesium

Last Updated

25 Sep 2018

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Time Traveler for magnesium

The first known use of magnesium was in 1812

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More Definitions for magnesium



English Language Learners Definition of magnesium

: a silver-white metallic element that produces a very bright white light when it burns


mag·ne·sium | \mag-ˈnē-zē-əm, -ˈnē-zhəm\

Kids Definition of magnesium

: a silvery white metallic chemical element that is lighter than aluminum and is used in lightweight alloys


mag·ne·sium | \mag-ˈnē-zē-əm, -zhəm \

Medical Definition of magnesium 

: a silver-white light malleable ductile metallic element that occurs abundantly in nature (as in bones and seeds and in the form of chlorophyll in the green parts of plants) and is used in metallurgical and chemical processes, in photography, in signaling, and in the manufacture of pyrotechnics because of the intense white light it produces on burning, and in construction especially in the form of light alloys symbol Mg — see Chemical Elements Table

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