Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
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.]
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.
(Chemistry) of, containing, using, or resembling ammonia. Also: ammoniac
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
am•mo•ni•a•cal(ˌæm əˈnaɪ ə kəl)
1. consisting of, containing, or using ammonia.
2. like ammonia.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.