ammonium sulfate

noun Chemistry.
a white, crystalline, water-soluble solid, (NH 4 ) 2 SO 4 , used chiefly as a fertilizer.

1800–85 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Science Dictionary
ammonium sulfate  
A brownish-gray to white crystalline salt used in fertilizers and water purification. Chemical formula: (NH4)2SO4.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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