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azo dye

noun

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


azo dye

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
“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


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Word History and Origins

Origin of azo dye1

First recorded in 1880–85

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azobenzeneazo group