- a white, crystalline, slightly water-soluble powder, Mg(OH)2, used chiefly in medicine as an antacid and as a laxative.
Origin of magnesium hydroxide
First recorded in 1905–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- A white powder used as an antacid and a laxative.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.