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
Minerals like calcium and magnesium can cling to the surface over time, especially in areas with high water hardness.
—
Daley Quinn, Southern Living, 25 May 2026
Leafy greens also deliver fiber, magnesium, potassium, and antioxidants—all nutrients tied to cardiovascular health.
—Lynn Andriani, Martha Stewart, 24 May 2026
Using it safely requires continuous heart monitoring, and some clinics now offer intravenous magnesium to reduce the chances of heart complications.
—Shayla Love, The Atlantic, 24 May 2026
That performance also comes packaged out-of-the-box with primo hardware including Öhlins suspension, Brembo GP4 brakes, a full Akrapovič titanium exhaust, and magnesium and carbon-fiber components.
—New Atlas, 23 May 2026
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Daley Quinn, Southern Living, 25 May 2026
Leafy greens also deliver fiber, magnesium, potassium, and antioxidants—all nutrients tied to cardiovascular health.
—Lynn Andriani, Martha Stewart, 24 May 2026
Using it safely requires continuous heart monitoring, and some clinics now offer intravenous magnesium to reduce the chances of heart complications.
—Shayla Love, The Atlantic, 24 May 2026
That performance also comes packaged out-of-the-box with primo hardware including Öhlins suspension, Brembo GP4 brakes, a full Akrapovič titanium exhaust, and magnesium and carbon-fiber components.
—New Atlas, 23 May 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 29 May. 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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