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.
Many of these deicers contain magnesium chloride, which is harmful to plants and aquatic life. — Steven Goldsmith, The Conversation, 27 Jan. 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 People use magnesium chloride as a road treatment to control dust, stabilize soil, and de-ice surfaces. — Jenna Prestininzi, Freep.com, 10 Dec. 2025 Use products that contain magnesium chloride or calcium chloride for better results in colder temperatures. — Karen Brewer Grossman, Southern Living, 23 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 7 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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