ubi·​qui·​none | \ yü-ˈbi-kwə-ˌnōn How to pronounce ubiquinone (audio) , ˌyü-bə-kwi-ˈnōn How to pronounce ubiquinone (audio) \

Definition of ubiquinone

: any of a group of lipid-soluble quinones that are found especially in mitochondria, have an isoprenoid side chain, and function in oxidative phosphorylation as electron-carrying coenzymes in electron transport

Examples of ubiquinone in a Sentence

Recent Examples on the Web Made up of five alpha- and beta-hydroxy acids and antioxidants (including retinol, ubiquinone and resveratrol), this combination will protect and smooth the complexion, as well as restore uniformity of tone. Felicity Carter, Forbes, 1 Aug. 2022

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ubiquinone.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of ubiquinone

1958, in the meaning defined above

History and Etymology for ubiquinone

blend of Latin ubique everywhere and English quinone; from its widespread occurrence in nature

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The first known use of ubiquinone was in 1958

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Last Updated

6 Aug 2022

Cite this Entry

“Ubiquinone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ubiquinone. Accessed 13 Aug. 2022.

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More Definitions for ubiquinone


ubi·​qui·​none | \ yü-ˈbik-wə-ˌnōn How to pronounce ubiquinone (audio) , ˌyü-bi-kwi-ˈnōn How to pronounce ubiquinone (audio) \

Medical Definition of ubiquinone

: any of a group of lipid-soluble quinones that contain a long isoprenoid side chain and that function in the part of cellular respiration comprising oxidative phosphorylation as electron-carrying coenzymes in the transport of electrons from organic substrates to oxygen especially along the chain of reactions leading from the Krebs cycle especially : coenzyme q10

More from Merriam-Webster on ubiquinone

Britannica.com: Encyclopedia article about ubiquinone


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