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.
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ammoniac see SAL AMMONIAC
am·mo·ni·ac ə-'mō-nē-.ak n the aromatic gum resin of a Persian herb (Dorema ammoniacum) of the carrot family used as an expectorant and stimulant and in plasters
Medical dictionary. 2011.