• synonyms


[dahy-uh-meen, dahy-am-in]
noun Chemistry.
  1. a compound containing two amino groups.
  2. hydrazine(def 1).
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Origin of diamine

First recorded in 1865–70; di-1 + amine
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for diamine

Historical Examples

  • Diamine brown V. Dye at the boil to shade; lift, wash and dry.

    The Dyeing of Cotton Fabrics

    Franklin Beech

  • It is probably a diamine, but has not been obtained in sufficient quantity for accurate chemical study.

  • Phenol for claret from Diamine cutch, and for gold yellow from Primuline, etc.

  • Diamine blue B X. Work at the boil to shade, then lift, wash and dry.

  • Alpha-naphthol for dark reds from Primuline, greys from Diamine blues, Neutral grey, etc.

British Dictionary definitions for diamine


  1. any chemical compound containing two amino groups in its molecules
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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