anthraquinone

n. (Chemistry) yellow crystal-like water-insoluble chemical used in the manufacture of dyes

Anthraquinone (9,10-dioxoanthracene) is an aromatic organic compound. It is a derivative of anthracene. It has the appearance of yellow or light gray to gray-green solid crystalline powder.Its other names are 9,10-anthracenedione, anthradione, 9,10-anthrachinon, anthracene-9,10-quinone, 9,10-dihydro-9,10-dioxoanthracene, and trade names Hoelite, Morkit, Corbit, and others.
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Anthraquinone /an·thra·quin·one/ 1. the 9,10 quinone derivative of anthracene, used in dye manufacture. 2. [more]Anthraquinone - Community and Resources

n. anthraquinone, hydrocarbon, compound composed of carbon and hydrogen (Chemistry)

(n.)
A hydrocarbon, C6H4.C2O2.C6H4, subliming in shining yellow needles. It is obtained by oxidation of anthracene.