Anthraquinone

noun

1. A yellow crystalline derivative of anthracene, C14H8O2, that is insoluble in water and used chiefly in the manufacture of dyes.
2. A product (C14H8O2) obtained from anthracene by the action of oxidizing agents. From it alizarin is prepared.
3. A hydrocarbon, C6H4.C2O2.C6H4, subliming in shining yellow needles. It is obtained by oxidation of anthracene.
4. A tricyclic quinone, derived from anthracene.
5. Any derivative of this parent compound, mostly natural pigments or synthetic dyes.