/ Dictionary / Index D diazonium: Meaning and Definition of Find definitions for: di•a•zo•ni•um Pronunciation: (dī"u-zō'nē-um), [key] — adj. Chem. of or derived from a diazonium compound. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: diazonium (Thesaurus) diazomethane diazonium compound Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language