a white, crystalline, water-soluble solid, (NH4)2SO4, used chiefly as a fertilizer.
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Origin of ammonium sulfate
First recorded in 1800–85
Words nearby ammonium sulfate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Scientific definitions for 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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.