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Epsom salt

American  

noun

  1. Chemistry, Pharmacology. Often Epsom salts. hydrated magnesium sulfate, MgSO 4 ⋅7H 2 O, occurring as small colorless crystals: used in fertilizers, the dyeing of fabrics, leather tanning, etc., and in medicine chiefly as a cathartic.


Etymology

Origin of Epsom salt

1760–70; after Epsom; so called from its presence in the local mineral water

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

I put Epsom salt with magnesium in the bath.

From The Wall Street Journal Jul. 11, 2026

Epsom salt or baking soda soaks have also been helpful for some people.

From Seattle Times Aug. 9, 2023

People associate Epsom salt with our grandmothers or our great-grandmothers.

From New York Times Jun. 10, 2023

Antibiotics and Epsom salt soaks eventually healed Boren’s foot.

From Washington Post Jul. 30, 2022

Soon, it'll be near evening and Daddy and I will walk slow back into the house where I'll pull the Epsom salt from the shelf fill the dishpan with warm water, massage his swelling hands.

From "Brown Girl Dreaming" by Jacqueline Woodson

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