coenzyme Q10

noun

Medical Definition of COENZYME Q10

: a ubiquinone C₅₉H₉₀O₄ of humans and most other mammals that has a side chain with ten isoprenoid units and possesses antioxidant properties

What made you want to look up coenzyme Q10? Please tell us where you read or heard it (including the quote, if possible).

Put-downs with flair

How to use a word that (literally) drives some people nuts.

Test your vocab with our fun, fast game

Ailurophobia, and 9 other unusual fears

Join Us

Merriam-Webster
on Facebook

Merriam-Webster
on Twitter

Bookstore: Digital and Print

Merriam-Webster references for Mobile, Kindle, print, and more.

See All

Other Merriam-Webster Dictionaries