milk of magnesia

noun

1. a milky white suspension in water of magnesium hydroxide, Mg (OH) 2 , used as an antacid or laxative.

milk of magnesia

noun

1. a suspension of magnesium hydroxide in water, used as an antacid and laxative

Word History and Origins

Origin of milk of magnesia¹

First recorded in 1875–80; formerly trademark