quinone

American  

[kwi-nohn, kwin-ohn] / kwɪˈnoʊn, ˈkwɪn oʊn /

noun

Chemistry.

1. a yellow, crystalline, cyclic unsaturated diketone, C 6 H 4 O 2 , formed by oxidizing aniline or hydroquinone: used chiefly in photography and in tanning leather.

2. any of a class of compounds of this type.

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quinone British  

/ ˈkwɪnəʊn, kwɪˈnəʊn /

noun

1. another name for benzoquinone

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quinone Scientific  

/ kwĭ-nōn′,kwĭn′ōn′ /

1. Any of a class of organic compounds that occur naturally as pigments in bacteria, plants, and certain fungi. Quinones have two carbonyl groups (CO) in an unsaturated six-member carbon ring.

2. A yellow crystalline compound belonging to this class, used in photography, to make dyes and to tan hides. Chemical formula: C ₆ H ₄ O ₂ .

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Etymology

Origin of quinone

First recorded in 1850–55; quin(ic acid) + -one

Example Sentences

The primary materials needed to manufacture this type of cathode are a quinone precursor and an amine precursor, which are already commercially available and produced in large quantities as commodity chemicals.

From Science Daily • Jan. 18, 2024

Known to scientists as 6PPD quinone, it’s a chemical compound that prevents tires from cracking and breaking down.

From Seattle Times • Nov. 11, 2022

The crevice between α-helix 3 and α-helix 4 is a putative quinone entry pathway.

From Nature • Apr. 24, 2018

Branded with tongue-twisting names like alphatocopherol quinone and pantoyltaurine, the newly discovered substances, present in common foods, have been found to attack vitamins and amino acids.

From Time Magazine Archive

As soon as the quinone starts to separate, the residue in the flask is transferred to a beaker and cooled in an ice bath.

From Organic Syntheses by Conant, James Bryant