Definitions

from The Century Dictionary.

  • noun Native Epsom salt, occasionally found as a delicate fibrous or capillary efflorescence on rocks, in the galleries of mines, upon the damp walls of cellars, etc. Also called hair-salt.
  • noun See stylolite.

from the GNU version of the Collaborative International Dictionary of English.

  • noun Native sulphate of magnesia or Epsom salt.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun mineralogy A saline evaporite, consisting of magnesium sulphate, also found in fumaroles, with the chemical formula MgSO4·7H2O.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Epsom +‎ -ite, named after the place Epsom in England in 1824.

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