a. Ammoniac. [ Obs. ] [ 1913 Webster ]
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. ]
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. ]