azo

¹ American  

[az-oh, ey-zoh] / ˈæz oʊ, ˈeɪ zoʊ /

adjective

Chemistry.

1. containing the azo group.

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azo- ² American  

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

   azobenzene.

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azo- ¹ British  

combining form

1. indicating the presence of an azo group

   azobenzene

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azo ² British  

/ ˈæ-, ˈeɪzəʊ /

adjective

1. of, consisting of, or containing the divalent group -N:N- See also diazo

   an azo group or radical

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azo ¹ Scientific  

/ ăz′ō,ā′zō /

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

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azo– ² Scientific  

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

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Etymology

Origin of azo¹

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

Origin of azo-²

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

Example Sentences

But some of the chemicals involved, such as azo dyes, contain materials linked to cancer and other harmful effects.

From Scientific American • Nov. 13, 2020

“They’ll have to put the ball in the net and play better defense” versus “Golazo, azo, azo, azo!”

From Salon • Aug. 26, 2010

Then there are some members of the azo dyes, particularly the croceine scarlets, which can also be dyed on the cotton by the aid of tin, lead or alum mordants.

From The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student by Beech, Franklin

The well-known dyes Congo Red and Bismarck Brown are azo compounds of complicated structure.

From The New Gresham Encyclopedia. Vol. 1 Part 3 Atrebates to Bedlis by Various

Diamine azo blue R R, and 20 lb. salt, then diazotise and develop with beta-napthol.

From The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student by Beech, Franklin