ammonium(redirected from Ammonium group)
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The univalent chemical ion NH4+, derived from ammonia, whose compounds chemically resemble the alkali metals.
(Chemistry) (modifier) of, consisting of, or containing the monovalent group NH4– or the ion NH4+: ammonium compounds.
am•mo•ni•um(əˈmoʊ ni əm)
the univalent ion, NH4 + , or group, NH4, which plays the part of a metal in the salt formed when ammonia reacts with an acid.
A positively charged ion, NH4, derived from ammonia and found in a wide variety of organic and inorganic compounds.