azo dye

American  

noun

Chemistry.

1. any of a large class of dyes containing one or more azo groups.

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azo dye British  

noun

1. any of a class of artificial dyes that contain the azo group. They are usually red, brown, or yellow and are obtained from aromatic amines

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Etymology

Origin of azo dye

First recorded in 1880–85

Example Sentences

In this manner a new azo dye is produced upon the fibre, which differs from the original one not only in colour, but also by being faster to washing and other influences.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" by Various

This was again carried out in the azo colour shed, with no more modification than that involved in passing, from one azo dye to another.

From The Riddle of the Rhine; chemical strategy in peace and war by Lefebure, Victor