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| a colorless, oily, water-soluble, highly toxic, liquid alkaloid, C10H14N2, found in tobacco and valued as an insecticide |
| a solution containing the maximum amount of solute capable of being dissolved under given conditions |
ammonium am·mo·ni·um (ə-mō'nē-əm)
n.
The univalent radical NH4+, that is derived from ammonia and that reacts as a univalent metal in forming ammonium compounds.
| ammonium (ə-mō'nē-əm) Pronunciation Key
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. |