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Definition of Ammoniac
1. Noun. The aromatic gum of the ammoniac plant.
2. Adjective. Pertaining to or containing or similar to ammonia.
Definition of Ammoniac
1. a. Of or pertaining to ammonia, or possessing its properties; as, an ammoniac salt; ammoniacal gas.
2. n. The concrete juice (gum resin) of an umbelliferous plant, the Dorema ammoniacum. It is brought chiefly from Persia in the form of yellowish tears, which occur singly, or are aggregated into masses. It has a peculiar smell, and a nauseous, sweet taste, followed by a bitter one. It is inflammable, partially soluble in water and in spirit of wine, and is used in medicine as an expectorant and resolvent, and for the formation of certain plasters.
Definition of Ammoniac
1. a gum resin [n -S]
Medical Definition of Ammoniac
1. A gum resin from a plant of western Asia, Dorema ammoniacum (family Umbelliferae); used internally as a stimulant and expectorant, and externally as a counterirritant plaster. (05 Mar 2000)