am·mo·ni·ac Am·mo·ni·a·cal a. Of, pertaining, or containing ammonia, or possessing its properties; as, an ammoniac salt; ammoniacal gas.
  Ammoniacal engine, an engine in which the vapor of ammonia is used as the motive force.
  Sal ammoniac 
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  Chlo·ride n. Chem. A binary compound of chlorine with another element or radical; as, chloride of sodium (common salt).
  Chloride of ammonium, sal ammoniac.
  Chloride of lime, bleaching powder; a grayish white substance, CaOCl2, used in bleaching and disinfecting; -- called more properly calcium hypochlorite. See Hypochlorous acid, under Hypochlorous.
  Mercuric chloride, corrosive sublimate.
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