单词 | ammoniac |
释义 | am·mo·ni·ac 2 ![]() n. A strong-smelling gum resin from the stems of a plant (Dorema ammoniacum) of western Asia, formerly used in perfumery and in medicine as an expectorant and a stimulant. Also called gum ammoniac. [Middle English ammoniak, from Latin ammōniacum, from Ammōniacus, of Amen, from Greek Ammōniakos; see AMMONIA.] |
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