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Definition of "quinone" [qui•none]

  • Any of a class of aromatic compounds found widely in plants, especially the yellow crystalline form, C6H4O2, used in making dyes, tanning hides, and photography. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "quinone" in a sentence
  • "Drink tonic water the quinone is a nerve relaxant and try Naphcon A eye drops."
  • "There is now growing evidence that supplementation with a substance that many nutritional scientists believe is a newly discovered vitamin, pyrroloquinoline quinone, or PQQ, may also help reduce the risk of various forms of dementia, including Alzheimer's dementia."
  • "The Zeta crystallin, quinone reductase, found in some mammals is transcribed from a lens specific promoter not present in other mammals."