n. [ From sal ammoniac, which was first obtaining near the temple of Jupiter Ammon, by burning camel's dung. See Ammoniac. ] (Chem.) A gaseous compound of hydrogen and nitrogen,
Ammoniacal engine,
Sal ammoniac [ L. sal ammoniacus ],
. Any fermentation process by which ammonia is formed, as that by which urea is converted into ammonium carbonate when urine is exposed to the air. [ Webster 1913 Suppl. ]
v.
a. (Chem.) Combined or impregnated with ammonia. [ 1913 Webster ]