[ih-meen, im-in]

noun Chemistry.

a compound containing the =NH group united with a nonacid group.

Nearby words

  1. imido,
  2. imido group,
  3. imido-,
  4. imidogen,
  5. imidole,
  6. imino,
  7. imino acid,
  8. imino group,
  9. imino-,
  10. iminoglycinuria

Origin of imine

First recorded in 1880–85; alteration of amine Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for imine



any of a class of organic compounds in which a nitrogen atom is bound to one hydrogen atom and to two alkyl or aryl groups. They contain the divalent group NH

Word Origin for imine

C19: alteration of amine


abbreviation for

Institution of Mining Engineers
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for imine


[ĭmēn′, -ĭn, ĭ-mēn]


A compound derived from ammonia and containing the bivalent NH group combined with a bivalent nonacid group.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for imine


[ĭmēn′, -ĭn, ĭ-mēn]

A compound derived from ammonia and containing an NH group attached by a double bond to a carbon atom in another group.
The radical CNH, having a double bond between the carbon and nitrogen atoms.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.