a·mine (?-m?n?, ?m??n)n. Any of a group of organic compounds of nitrogen, such as ethylamine, C2H5NH2, that may be considered ammonia derivatives in which one or more hydrogen atoms have been replaced by a hydrocarbon group.[am(monium) + -ine.]American Heritage® Dictionary of the English Language, Fifth Edition.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.amine (??mi?n; ?æm?n) n (Chemistry) an organic base formed by replacing one or more of the hydrogen atoms of ammonia by organic groups[C19: from am(monium) + -ine2]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014a?mine (??min, ?æm ?n) n. any of a class of compounds derived from ammonia by replacement of one or more hydrogen atoms with organic groups. [1860?65; am (monium) + -ine2] a?min?ic (??mi n?k, ??m?n ?k) adj. a?min?i?ty (??m?n ? ti) n. -amine var. of amino- as final element of a word: Dramamine. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.amineAny of a series of organic compounds of nitrogen, such as ethylamine.Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited