azo

[ az-oh, ey-zoh ]

/ ˈæz oʊ, ˈeɪ zoʊ /

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adjective Chemistry.

containing the azo group.

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Origin of azo

First recorded in 1875–80; independent use of azo-

Words nearby azo

azimuth circle, azine, azine dye, azlon, Aznar, azo, azobenzene, azo dye, azo group, azoic, azoic dye

Other definitions for azo (2 of 2)

azo-

a combining form used in the formation of compound words, especially names of chemical compounds containing nitrogen or the azo group: azobenzene.

Also especially before a vowel, az-.

Origin of azo-

<Greek ázō(os) without life, equivalent to a-a-⁶ + zō-zo-

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

How to use azo in a sentence

Today, they are often synthesized from a chemical derived from petroleum called naphthalene to make a final product called an azo dye.
The Dead Serious Reason You Might Want to Avoid Food Dyes|Lorne J. Hofseth, The Conversation|December 10, 2021|The Daily Beast
If a pink to violet-red coloration is produced in a short time the presence of an azo-color is indicated.
Detection of the Common Food Adulterants|Edwin M. Bruce
If an azo-color was used to color the milk this curd will be pink, but the curd of normal milk will be white or yellowish.
Detection of the Common Food Adulterants|Edwin M. Bruce
(d) Two series of azo dyes of selenium have been prepared and have been shown to possess a marked tinctorial value.
Synthesis of 2-methyl-4-selenoquinazolone, 2-phenylbenzoselenazole, and its derivatives|Y-Gwan Chen

Azo gained a great reputation as a professor, and numbered amongst his pupils Accursius and Jacobus Balduinus.
Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1|Various
Azo-dinaphthyl diamine is recognized by its peculiar orange cast, and is turned by hydrochloric acid to a dull, dirty violet.
Scientific American Supplement, No. 363, December 16, 1882|Various

British Dictionary definitions for azo (1 of 2)

azo

/ (ˈeɪzəʊ, ˈæ-) /

adjective

of, consisting of, or containing the divalent group -N:N-an azo group or radical See also diazo

Word Origin for azo

independent use of azo-

British Dictionary definitions for azo (2 of 2)

azo-

before a vowel az-

combining form

indicating the presence of an azo groupazobenzene

Word Origin for azo-

from French azote nitrogen, from Greek azōos lifeless, from a- 1 + zōē life

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

Scientific definitions for azo (1 of 2)

azo

[ ăz′ō, ā′zō ]

Containing two nitrogen atoms joined by a double bond, with each nitrogen atom attached to another group.

Scientific definitions for azo (2 of 2)

azo-

az-

A prefix that means containing an azo group attached at both ends to other groups, as in the compound azobenzene.