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
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The unique porous structure of this magnesium foam endows the material with exceptional mechanical properties, combining high formability with high energy absorption.
—
Mrigakshi Dixit, Interesting Engineering, 19 May 2026
Insufficient nitrogen, iron, and magnesium in the soil may turn zucchini leaves yellow.
—Nadia Hassani, The Spruce, 19 May 2026
Here are simple routines that can enhance magnesium's effects and your holistic health.
—Megan Nunn, Verywell Health, 19 May 2026
The 109-room property houses a 2,300-square-meter spa featuring London’s first hotel magnesium pool, cryotherapy, flotation spaces and a longevity clinic.
—Rachel Dube, Forbes.com, 18 May 2026
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Mrigakshi Dixit, Interesting Engineering, 19 May 2026
Insufficient nitrogen, iron, and magnesium in the soil may turn zucchini leaves yellow.
—Nadia Hassani, The Spruce, 19 May 2026
Here are simple routines that can enhance magnesium's effects and your holistic health.
—Megan Nunn, Verywell Health, 19 May 2026
The 109-room property houses a 2,300-square-meter spa featuring London’s first hotel magnesium pool, cryotherapy, flotation spaces and a longevity clinic.
—Rachel Dube, Forbes.com, 18 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 21 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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