[ dahy-az-oh, -ey-zoh ]
/ daɪˈæz oʊ, -ˈeɪ zoʊ /

adjective Chemistry.

containing the diazo group.

Origin of diazo

First recorded in 1855–60; independent use of diazo-

Definition for diazo (2 of 2)



a combining form with the meaning “diazo group,” used in the formation of compound words: diazomethane.
Also especially before a vowel, diaz-.

Origin of diazo-

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for diazo

British Dictionary definitions for diazo

/ (daɪˈeɪzəʊ) /


of, consisting of, or containing the divalent group, =N:N, or the divalent group, -N:N-diazo compound See also azo
Also: dyeline of or relating to the reproduction of documents using the bleaching action of ultraviolet radiation on diazonium salts

noun plural -os or -oes

a document produced by this method
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