Breadcrumb Home > Dictionary > Index E Epsom salt: Meaning and Definition of Find definitions for: Ep'som salt" Pronunciation: [key] Often,hydrated magnesium sulfate, MgSO&multiplydot;7HO, occurring as small colorless crystals: used in fertilizers, the dyeing of fabrics, leather tanning, etc., and in medicine chiefly as a cathartic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. epsomite Epstein TrendingHere are the facts and trivia that people are buzzing about. Biographies: Notable Jewish Religious Leaders Current Events This Week: September 2023 Hispanic Population and the 2010 U.S. Census Preamble of the United Nations Charter The Jewish Calendar ✖ Related Content Daily Word Quiz: bildungsroman Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language