quinonoid

adjective
qui·​no·​noid | \ kwi-ˈnō-ˌnȯid How to pronounce quinonoid (audio) , ˈkwi-nə- How to pronounce quinonoid (audio) \
variants: or quinoid \ ˈkwi-​ˌnȯid How to pronounce quinoid (audio) \

Definition of quinonoid

: resembling quinone especially in having a 6-membered carbon ring containing two double bonds

First Known Use of quinonoid

1878, in the meaning defined above

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Time Traveler for quinonoid

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The first known use of quinonoid was in 1878

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Last Updated

3 Sep 2020

Cite this Entry

“Quinonoid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quinonoid. Accessed 29 Sep. 2020.

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More Definitions for quinonoid

quinonoid

adjective
qui·​no·​noid | \ kwi-ˈnō-ˌnȯid How to pronounce quinonoid (audio) , ˈkwin-ə-ˌnȯid How to pronounce quinonoid (audio) \
variants: or quinoid \ ˈkwi-​ˌnȯid How to pronounce quinoid (audio) \

Medical Definition of quinonoid

: resembling quinone especially : having a structure characterized by a benzene nucleus containing two instead of three double bonds within the nucleus and two external double bonds attached to the nucleus either at ortho or para positions (as in the two carbonyl groups of quinones)

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