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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.

am·mo·ni·ac 2

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.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(əˈməʊnɪˌæk) or


(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)]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(əˈmoʊ niˌæk)

n. adj.
[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]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.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 ammoniaammoniac - pertaining to or containing or similar to ammonia
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
For details of how hydrogen gas and ammoniac compounds serve as fuel to plants and bacteria, see Susanne Stein et al., "Microbial Activity and Bacterial Composition of [H.sub.2]-treated Soils with Net [CO.sub.2] Fixation," Soil Biology and Biochemistry 37, no.
Des affrontements ont oppose hier mardi la police tunisienne et des habitants d'un quartier de la cite de Gabes (sud-est) apres un accident nocturne dans une usine chimique qui a entraEne une fuite de gaz ammoniac, selon un journaliste de l'AFP.
The recipe is made up of the following: common salt, sal ammoniac (ammonium chloride), white pepper, black pepper, ginger, cumin, thyme, celery seed (or parsley), origano, rocket-seed, saffron, hyssop from Crete, bay-leaf, dill and parsley.
It felt that proposing a 27% reduction of ammoniac emissions was a strong blow to the agricultural world, which has already been badly affected by high production costs.
Where in the aqueous solution, ammoniac nitrogen can be classified into ammonium ion [N[H.sub.4.sup.+]] and free ammonia [N[H.sub.3](aq)] which are released from many industrial plants of coke, fertilizers, and metal finishing [2].
XLS is a compounded prescription of Chinese medicine, consisting of a fixed dose combination of the following well-characterized and standardized eight natural herbal or mineral substances: natural indigo (indigo naturalis), cow bezoar (calculus bovis), pearl powder (margarita), watermelon frost (mirabilitum praeparatum), calcitum (gypsum rubrum), borax (natrium biboricum), ammonium chloride (sal ammoniac), and borneol (borneolum syntheticum).
[34] identified the ammoniac nitrogen as limiting substrate for citrate production.
The new NEC directive proposes reducing by 27% by 2030 ammoniac emissions caused by agriculture, and suggests a series of measures that can be implemented to manage this.
In 2010, compiling standards of 5 petrochemical production has been ended in ministry of oil including olphin, methanol, ammoniac, urea and aromatic.
Les gaz rencontres sont le monoxyde de carbone (CO) dans 98,8% des cas et le gaz ammoniac dans 0,2% des cas.
Both supernatants were combined and adjusted to pH 6-7 with 6.3% ammoniac solution.
It is as though the dark were resolving him out of his integrity, into an unrelated scattering of components--snuffings and stampings; smells of cooling flesh and ammoniac hair; an illusion of a coordinated whole....