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See ammonium hydroxide.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
am•mo•nia(əˈmoʊn yə, əˈmoʊ ni ə)
1. a colorless, pungent, suffocating, highly water-soluble, gaseous compound, NH3, used chiefly for refrigeration and in the manufacture of commercial chemicals and laboratory reagents.
2. Also called ammonia water. ammonia dissolved in water; ammonium hydroxide.
[1790–1800; < New Latin, so called as being obtained from sal ammoniac. See ammoniac]
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