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