quinonoid

American  

[kwin-uh-noid, kwi-noh-noid] / ˈkwɪn əˌnɔɪd, kwɪˈnoʊ nɔɪd /

Also quinoidal

adjective

Chemistry.

1. of or resembling quinone.

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quinonoid British  

/ ˈkwɪnəˌnɔɪd, kwɪˈnəʊnɔɪd /

adjective

1. of, resembling, or derived from quinone

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Etymology

Origin of quinonoid

First recorded in 1875–80; quinone + -oid

Example Sentences

Solution in dilute alkali was supposed to be accompanied by the rupture of the lactone ring with the formation of the quinonoid salt shown in 2.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" by Various

In recent years chemists have begun to regard the constitution of nearly all dyestuffs as similar to that of Quinone, and some even believe that all coloured organic compounds have a quinonoid structure.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" by Various

Ligno-celluloses.—These compounds have many of the characteristics of the cellulose esters; they are in effect ethereal compounds of cellulose and the quinonoid lignone complex, and the combination resists hydrolysis by weak alkalis or acids.

From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5 "Cat" to "Celt" by Various