ammoniac(redirected from Ammoniacum)
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am·mo·ni·ac 1(ə-mō′nē-ăk′) also am·mo·ni·a·cal (ăm′ə-nī′ə-kəl)
Of, containing, or similar to ammonia.
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.]
(Elements & Compounds) a strong-smelling gum resin obtained from the stems of the N Asian umbelliferous plant Dorema ammoniacum and formerly used as an expectorant, stimulant, perfume, and in porcelain cement. Also called: gum ammoniac
[C14: from Latin ammōniacum, from Greek ammōniakos belonging to Ammon (apparently the gum resin was extracted from plants found in Libya near the temple of Ammon)]
[1375–1425; late Middle English < Latin ammōniacum < Greek ammōniakón, neuter of ammōniakós of Ammon1; applied to a salt and a gum resin prepared near the Shrine of Ammon in Libya]
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|Noun||1.||ammoniac - the aromatic gum of the ammoniac plant|
gum - any of various substances (soluble in water) that exude from certain plants; they are gelatinous when moist but harden on drying
|Adj.||1.||ammoniac - pertaining to or containing or similar to ammonia|