单词	quinone
释义	quinone noun qui·​none kwi-ˈnōn  ˈkwi-ˌnōn 1 : either of two isomeric cyclic crystalline compounds C6H4O2 that are derivatives of benzene 2 : any of various usually yellow, orange, or red quinonoid compounds including several that are biologically important as coenzymes, hydrogen acceptors, or vitamins Example Sentences Recent Examples on the Web The push stems from an organic compound in tires called quinone that was newly identified by researchers at the University of Washington, said Birgit Hagedorn, a geochemist and longtime board member of the Anchorage Waterways Council. Anchorage Daily News, 26 Apr. 2021 The researchers identified a chemical called 6PPD, a common rubber additive aimed at making car tires last longer, that transforms into deadly 6PPD-quinone when unleashed in nature, reports Lynda V. Maps of the Seattle Times. Alex Fox, Smithsonian Magazine, 7 Dec. 2020 Quinones won the rescue board race and beach flags events in the Boys B Division. Gary Curreri, Sun-Sentinel.com, 28 July 2017 Quinones explores this phenomenon by talking to everyone involved, from addicts and parents to doctors, scientists, cops, and even Mexican drug traffickers. Andy Borowitz, The New Yorker, 2 Feb. 2017 Word History Etymology International Scientific Vocabulary quinine + -one First Known Use 1853, in the meaning defined at sense 1 Medical Definition quinone noun qui·​none kwin-ˈōn, ˈkwin-ˌ  1 : either of two isomeric cyclic crystalline compounds C6H4O2 that are extremely irritating to the skin and mucous membranes 2 : any of various usually yellow, orange, or red quinonoid compounds including several that are biologically important as coenzymes, hydrogen acceptors, or vitamins
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