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

Native to India, Bangladesh, Pakistan, and Afghanistan, Moringa is a plant that's entirely edible, from the stems to the leaves to the seeds, and is packed with nutrients like vitamin C, magnesium, and potassium. Audrey Bruno, SELF, "12 Health Food Trends to Be on the Lookout for in 2019," 11 Dec. 2018 With tons of basalt rock around, the chemistry of the water would have reflected that rock—high in iron, magnesium, and silica. Scott K. Johnson, Ars Technica, "The secret to Mars’ past warmth could be beneath Curiosity’s wheels," 9 Aug. 2018 And the magnesium alloy body feels as sturdy and solidly built as ever. Chris Welch, The Verge, "Fujifilm X-T3 review: the do-everything camera," 24 Oct. 2018 The magnesium frame bonded to the leather lid is lighter, helping the Spectre Folio avoid the top-heavy feel of some convertibles. Melissa Riofrio, PCWorld, "The HP Spectre Folio is a leather-clad laptop that's luxurious," 1 Oct. 2018 Copper and magnesium too have been shown to speed up wound-healing and reduce inflammation, respectively. Rachel Jacoby Zoldan, Glamour, "The No-Frills Face Cream That Tackles the Toughest Dry Spots," 27 Aug. 2018 The trouble began as sailors were unloading illuminating magnesium parachute flares from planes after a scrubbed bombing mission. John Mccain, Popular Mechanics, "Fire on the Flight Deck," 27 Aug. 2018 The Go looks like a shrunken version of the Surface Pro, with a durable magnesium body, signature 165° kickstand, bright and sharp touchscreen, and a 10-inch form factor that seems custom-built for cramped coach cabins. Brad Rickman, Condé Nast Traveler, "Microsoft Surface Go: The New Tablet That We've Been Dreaming of Forever," 17 July 2018 Hard to find in a convenient drinkable juice form on these shores, mangosteen is known for its rich potassium, manganese and magnesium content. Kavita Daswani,, "Fourth of July BBQ draaaanks that won't blow your diet," 29 June 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

30 Jan 2019

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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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More from Merriam-Webster on magnesium

Rhyming Dictionary: Words that rhyme with magnesium

Spanish Central: Translation of magnesium

Nglish: Translation of magnesium for Spanish Speakers Encyclopedia article about magnesium

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