Hypertext Webster Gateway: "Ammonium"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Ammonium \Am*mo"ni*um\, n. [See {Ammonia}.] (Chem.)
A compound radical, {NH4}, having the chemical relations of a
strongly basic element like the alkali metals.
From WordNet (r) 1.7 (wn)
ammonium
n : the ion NH4 derived from ammonia; behaves in many respects
like an alkali metal ion [syn: {ammonium ion}]
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