magnesium chloride

noun

: a bitter deliquescent salt MgCl2 used especially as a source of magnesium metal

Examples of magnesium chloride in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
There are several ice melts on the market with different chemical compositions, such as magnesium chloride (Mg2Cl), potassium chloride (KCl), and calcium chloride (CaCl2). — Markis Hill, Kansas City Star, 25 Feb. 2026 Purple ice melter is a blend of sodium acetate, magnesium chloride, calcium chloride, potassium chloride, and a non-staining purple coloring. — Timothy Dale, The Spruce, 16 Feb. 2026 For those who live in colder climates, stocking up on magnesium chloride is a smart way to prepare for a salt shortage. — Olivia McIntosh, Martha Stewart, 8 Feb. 2026 Many of these deicers contain magnesium chloride, which is harmful to plants and aquatic life. — Steven Goldsmith, The Conversation, 27 Jan. 2026 See All Example Sentences for magnesium chloride

Word History

First Known Use

1866, in the meaning defined above

Time Traveler
The first known use of magnesium chloride was in 1866

Rhymes for magnesium chloride

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Browse Nearby Words

magnesium carbonate
magnesium chloride
magnesium-chlorophoenicite
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Cite this Entry

“Magnesium chloride.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/magnesium%20chloride. Accessed 12 Jul. 2026.

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Kids Definition

magnesium chloride

noun
: a bitter salt that occurs dissolved in seawater and is used in producing magnesium metal

Medical Definition

magnesium chloride

noun
: a bitter crystalline salt MgCl2 used especially to replenish body electrolytes

More from Merriam-Webster on magnesium chloride

Britannica.com: Encyclopedia article about magnesium chloride

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