Definitions

from The Century Dictionary.

  • noun A compound, 1.5-dihydroxyanthraquinone, HOC6H3(CO)2C6H3OH, isomeric with alizarin. It crystallizes in yellow leaflets which melt at 280° C., and is used as a dyestuff.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun organic chemistry 1,5-dihydroxyanthraquinone

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