ubiquinone

noun

ubi·​qui·​none yü-ˈbi-kwə-ˌnōn  ˌyü-bə-kwi-ˈnōn 

: 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

The second is loaded with antioxidants, including vitamin C, ubiquinone, and resveratrol; and skin soothers like zinc, green tea, and yarrow extract for skin that’s immediately luminous and refreshed rather than red and sensitized. —Emily Orofino, Vogue, 25 Aug. 2025

May Provide Antioxidants Coenzyme Q10, also known as ubiquinone, is a compound found in animal organs, particularly the heart. —Allison Herries, Verywell Health, 16 Apr. 2025

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

Word History

Etymology

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

First Known Use

1958, in the meaning defined above

Rhymes for ubiquinone

• abalone
• acrimony
• alimony
• antimony
• ceremony
• chalcedony
• cicerone
• cosmogony
• eurozone
• lithopone
• macaroni
• matrimony

Medical Definition

ubiquinone

noun

ubi·​qui·​none yü-ˈbik-wə-ˌnōn  ˌyü-bi-kwi-ˈnōn 

: 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