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ammonium

   Also found in: Medical, Encyclopedia, Wikipedia, Hutchinson 0.04 sec.
am·mo·ni·um  (-mn-m)
n.
The univalent chemical ion NH4+, derived from ammonia, whose compounds chemically resemble the alkali metals.
[ammon(ia) + -ium.]
ammonium
Adjective
Chem of or containing the chemical group NH4- or the ion NH4+
ammonium  (-mn-m)
A positively charged ion, NH4, derived from ammonia and found in a wide variety of organic and inorganic compounds. Compounds of ammonium chemically resemble the alkali metals.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.ammonium - the ion NH4 derived from ammonia; behaves in many respects like an alkali metal ion
ammonium ion
ammonia - a pungent gas compounded of nitrogen and hydrogen (NH3)
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Honeywell has named Walt Viola director of sales for Nylon Intermediates, with responsibility for Sulf-N[R] ammonium sulfate fertilizers.
Honeywell by Agri Marketing
What's more, for every kilogram of caprolactam manufactured, says chemist Robert Raja, also of the University of Cambridge, 4 kg of ammonium sulfate are generated.
Greener nylon: one-pot recipe could eliminate industrial leftovers by Cunningham, A. / Science News
3], after 28 days of exposure to ammonium perchlorate, fish exposed to the two higher levels (10 and 100 mg/L) were developmentally retarded, with a lack of scales and poor pigmentation, and significantly lower wet weight and standard length than were control fish.
Effects of ammonium perchlorate on thyroid function in developing ... by Brown, J. Anne / Environmental Health Perspectives
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