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[mass noun] A yellow crystalline compound obtained by oxidation of anthracene. It is the basis of many natural and synthetic dyes.
- ‘The new algicide, the subject of a patent application, uses a product derivative based on the natural compound anthraquinone, found in rye grass.’
- ‘Aloe emodin is an anthraquinone derivative similar in structure to the known photodynamic sensitizer hypericin.’
- ‘The preparation of anthraquinone used in the National Toxicology Program cancer bioassay was contaminated with the mutagen 9-nitroanthracene’
- ‘The appearance of such photochemical by-products as dianthracene and anthraquinone was monitored throughout the irradiation experiments.’
- ‘Their action is due to free anthraquinones, that is to say anthraquinone glycosides called sennosides, of which several types have been identified.’
Late 19th century: from anthra(cene) + quinone.
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