ALL meanings of ammonium
am·mo·ni·um
A a - noun ammonium of, consisting of, or containing the monovalent group NH4– or the ion NH4+ 3
- noun ammonium the monovalent radical NH4, present in salts produced by the reaction of ammonia with an acid: its compounds are like those of the alkali metals 3
- noun ammonium (inorganic chemistry) The univalent NH4+ cation, derived by the protonation of ammonia. 1
- noun ammonium the univalent ion, NH 4 + , or group, NH 4 , which plays the part of a metal in the salt formed when ammonia reacts with an acid. 1