from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A red crystalline compound, C14H8O6, used to dye cotton.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. 1,2,5,8-tetrahydroxyanthraquinone

from The Century Dictionary and Cyclopedia

  • n. A compound, (OH)2C6H2-(CO)2C6H2(OH)2 or 1,2,5,8-anthraquinonetetrol, made from alizarin and other anthraquinone derivatives; alizarin Bordeaux (which see). It crystallizes in deep-red needles with a green metallic luster, and is used as a dye.


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