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

They're constructed from a lightweight magnesium frame with a rubber finish that improves grip and enhances protection. —Rich Owen, Space.com, 7 Mar. 2025

Instead of a standard prenatal, Schneider added magnesium, vitamin D, omega-3 and methylated folate to her daily regimen. —Renée Onque,lauren Shamo, CNBC, 7 Mar. 2025

Seaweed Traditionally used to make sushi, seaweed is a nutrient-dense food, containing iodine, magnesium, calcium, and iron.11 Its umami (savory) flavor and natural crunch are also pleasing to the senses. —Jonathan Purtell, Verywell Health, 5 Mar. 2025

The fruit is rich in vitamin C, potassium, magnesium, as well as antioxidants, and potassium. —New Atlas, 1 Mar. 2025

Word History

Etymology

New Latin, from magnesia

First Known Use

1812, in the meaning defined above

Phrases Containing magnesium

• magnesium carbonate
• magnesium chloride
• magnesium hydroxide
• magnesium oxide
• magnesium sulfate

Rhymes for magnesium

• caesium
• cesium
• trapezium

Kids 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 

: 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