a white, water-soluble salt, MgSO4, used chiefly in medicine and in the processing of leather and textiles.
Compare Epsom salt.
Origin of magnesium sulfate
First recorded in 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Medicine definitions for magnesium sulfate
A colorless crystalline compound used as a cathartic and applied locally as an anti-inflammatory agent.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.