ammoniac

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ammoniac

or

gum ammoniac

(əmō`nēăk'), yellowish substance with a sickening, bitter taste, obtained from the milky exudate of the injured stem of a plant (Dorema ammoniacum) found in Iran, India, and S Siberia. It is a gum resin, soluble in alcohol and ether. It is used in industry in the manufacture of porcelain cements and in medicine as an expectorant. When gum ammoniac is distilled, it yields a liquid, oil of ammoniac.

ammoniac

[ə′mōn·ē‚ak]
(inorganic chemistry)
(materials)
A gum resin obtained from the stems of the ammoniac plant; used in medicine, perfume, plaster, concrete, and adhesive.