Ammoniacal fermentation Meaning, Definition & Usage

Definitions
  1. the conversion of the urea of the urine into ammonium carbonate, through the growth of the special urea ferment. CON2H4 + 2H2O = (NH4)2CO3 Urea. Water. Ammonium carbonate. Whenever urine is exposed to the air in open vessels for several days it undergoes this alkaline fermentation.

Webster 1913