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milk of magnesia

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milk of magnesia

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

Origin:
1875–80; formerly trademark
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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milk of magnesia  
n.  A milky white aqueous suspension of magnesium hydroxide, Mg(OH)2, used as an antacid and a laxative.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

milk of magnesia 
1880, proprietary name for white suspension of magnesium hydroxide in water, taken as an antacid, invented by U.S. chemist Charles Henry Phillips. Herbal or culinary preparations resembling milk had been similarly named (e.g. milk of almond) since c.1430.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: milk of magnesia
Function: noun
: a milk-white suspension of magnesium hydroxide in water used as an antacid and laxative called also magnesia magma
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

milk of magnesia n.
A milky white aqueous suspension of magnesium hydroxide 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.
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