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

Dyes that contain it, along with other so-called “azo” dyes, are banned from import by the European Union.

From Scientific American

His scoring calls can be equally long-winded but distinctive: "gooaalll-azo azo azo!"

From US News

His scoring calls can be equally long-winded but distinctive: “gooaalll-azo azo azo!”

From Washington Times

A study of the paranitraniline or azo reds painted over the various pigments as priming coats demonstrated that the reds on this fence are in better condition than the reds at Atlantic City.

From Project Gutenberg