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
The mixes contain vitamin B6, folic acid, magnesium, and an inositol blend.
—
Essence, 19 Sep. 2025
Solid-state storage using magnesium hydride (MgH₂) offers a promising alternative because of its high theoretical capacity.
—Atharva Gosavi, Interesting Engineering, 19 Sep. 2025
Leafy greens, nuts, and legumes provide adequate magnesium, too.
—Sohaib Imtiaz, Verywell Health, 19 Sep. 2025
Whole seeds provide more fiber, potassium, and zinc, while shelled pepitas offer more protein, fat, iron, magnesium, and phosphorus.
—Johna Burdeos, Health, 19 Sep. 2025
See All Example Sentences for magnesium
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Essence, 19 Sep. 2025
Solid-state storage using magnesium hydride (MgH₂) offers a promising alternative because of its high theoretical capacity.
—Atharva Gosavi, Interesting Engineering, 19 Sep. 2025
Leafy greens, nuts, and legumes provide adequate magnesium, too.
—Sohaib Imtiaz, Verywell Health, 19 Sep. 2025
Whole seeds provide more fiber, potassium, and zinc, while shelled pepitas offer more protein, fat, iron, magnesium, and phosphorus.
—Johna Burdeos, Health, 19 Sep. 2025
See All Example Sentences for magnesium
Cite this Entry
“Magnesium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/magnesium. Accessed 21 Sep. 2025.
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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