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ammonium nitrate

noun, Chemistry
1.
a white, crystalline, water-soluble powder, NH 4 NO 3 , usually produced by reacting nitric acid with vaporous ammonia: used chiefly in explosives, fertilizers, freezing mixtures, and in the manufacture of nitrous oxide.
Origin
1880-1885
1880-85
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for ammonium nit rate

ammonium nitrate

noun
1.
a colourless highly soluble crystalline solid used mainly as a fertilizer and in explosives and pyrotechnics. Formula: NH4NO3
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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ammonium nit rate in Science
ammonium nitrate  
A colorless crystalline salt used in fertilizers, explosives, and solid rocket propellants. Chemical formula: NH4NO3.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for ammonium nit rate

ammonium nitrate

(NH4NO3), a salt of ammonia and nitric acid, used widely in fertilizers and explosives. The commercial grade contains about 33.5 percent nitrogen, all of which is in forms utilizable by plants; it is the most common nitrogenous component of artificial fertilizers. Ammonium nitrate also is employed to modify the detonation rate of other explosives, such as nitroglycerin in the so-called ammonia dynamites, or as an oxidizing agent in the ammonals, which are mixtures of ammonium nitrate and powdered aluminum.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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