magnesium
noun
mag·ne·sium
mag-ˈnē-zē-əm 
-zhəm
: 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
How Melatonin and Magnesium Work Together Some sleep-support supplements contain both melatonin and magnesium.
—
Trang Tran, Verywell Health, 4 Feb. 2026
In 2015 researchers at New York University embedded hollow silicon carbide spheres in a magnesium alloy to create a metal matrix composite lighter than water.
—Deni Ellis Béchard, Scientific American, 3 Feb. 2026
Spinach is packed with vitamins C and K, not to mention iron and magnesium, which puts it in a class of those green crops like kale that have plenty of nutritional benefits to offer.
—Samantha Johnson, Martha Stewart, 1 Feb. 2026
Outside of the standard spa offerings, look out for the Mg12 Massage, which incorporates magnesium to soothe the body, or the head-to-toe Peaceful Warrior CBD Treatment.
—Asonta Benetti, Condé Nast Traveler, 31 Jan. 2026
See All Example Sentences for magnesium
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Trang Tran, Verywell Health, 4 Feb. 2026
In 2015 researchers at New York University embedded hollow silicon carbide spheres in a magnesium alloy to create a metal matrix composite lighter than water.
—Deni Ellis Béchard, Scientific American, 3 Feb. 2026
Spinach is packed with vitamins C and K, not to mention iron and magnesium, which puts it in a class of those green crops like kale that have plenty of nutritional benefits to offer.
—Samantha Johnson, Martha Stewart, 1 Feb. 2026
Outside of the standard spa offerings, look out for the Mg12 Massage, which incorporates magnesium to soothe the body, or the head-to-toe Peaceful Warrior CBD Treatment.
—Asonta Benetti, Condé Nast Traveler, 31 Jan. 2026
See All Example Sentences for magnesium
Cite this Entry
“Magnesium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/magnesium. Accessed 6 Feb. 2026.
Copy CitationKids Definition
magnesium
noun
mag·ne·sium
mag-ˈnē-zē-əm
-zhəm
: a silver-white metallic element that is light and easily worked, burns with a dazzling light, and is used in making lightweight alloys see element
Medical Definition
magnesium
noun
mag·ne·sium
mag-ˈnē-zē-əm
-zhəm
-zhəm
: 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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