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

  • n. A substance resembling quinone in structure or physical properties.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Having a structure based upon a quinone
  • n. Any substance whose structure is based upon a quinone.

from The Century Dictionary and Cyclopedia

  • Designating compounds containing the grouping , which is characteristic of a quinone. Also quinonoid.


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