diazo

[ dahy-az-oh, -ey-zoh ]

/ daɪˈæz oʊ, -ˈeɪ zoʊ /

Save This Word!

adjective Chemistry.

containing the diazo group.

QUIZ

THINGAMABOB OR THINGUMMY: CAN YOU DISTINGUISH BETWEEN THE US AND UK TERMS IN THIS QUIZ?

Do you know the difference between everyday US and UK terminology? Test yourself with this quiz on words that differ across the Atlantic.

Question 1 of 7

In the UK, COTTON CANDY is more commonly known as…

candystring

candyfloss

candypuff

TAKE THE QUIZ TO FIND OUT

Origin of diazo

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

Words nearby diazo

Díaz del Castillo, Díaz de Vivar, diazepam, diazine, Díaz Mirón, diazo, diazoalkane, diazoamino, diazoamino group, diazo group, diazole

Other definitions for diazo (2 of 2)

diazo-

Chemistry.

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-

di-¹ + azo-

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use diazo in a sentence

Ordinarily the diazo appears a little earlier than the Widal reaction—about the fourth or fifth day—but it may be delayed.
A Manual of Clinical Diagnosis|James Campbell Todd
The result is a diazo-salt; aniline, for example, giving diazobenzene chloride, and toluidine diazotoluene chloride.
Coal|Raphael Meldola
A new phase in the technology of tar-products was entered upon when Witt caused a diazo-salt to act upon diamidobenzene.
Coal|Raphael Meldola
When the para-position is occupied, the diazo group takes the ortho-position.
Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4|Various

The constitution of the isomeric diazo hydroxides has given rise to much discussion.
Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4|Various

British Dictionary definitions for diazo

diazo

/ (daɪˈeɪzəʊ) /

adjective

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