diazonium[dī′ə zō′nē əm]
diazonium definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
designating or containing the organic radical N⋮N, which occurs in a series of aromatic compounds
Origin: diaz(o)- plush (amm)onium
diazonium definition by American Heritage Dictionary
Any of various compounds, especially an aromatic hydrocarbon, containing the cation N2 attached to an organic group.
Origin: diaz(o) + (amm)onium.