from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Any of various compounds, especially an aromatic hydrocarbon, containing the cation N2 attached to an organic group.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. any univalent cation, of general formula R-N2+; diazonium salts are used to manufacture azo dyes, and take part in the Sandmeyer reaction

from The Century Dictionary and Cyclopedia

  • n. A basic organic radical, . Some of the diazonium compounds are regarded as tautomeric forms of diazo compounds.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the univalent cation R-N:N- (where R is an aromatic hydrocarbon); found in salts that are used in manufacturing azo dyes


diaz(o) + (amm)onium.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From diazo + ammonium (Wiktionary)



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