coenzyme
noun
co·en·zyme
(ˌ)kō-ˈen-ˌzīm 
: a thermostable nonprotein compound that forms the active portion of an enzyme system after combination with an apoenzyme
Examples of coenzyme in a Sentence
Recent Examples on the Web
Compounds such as glutathione, coenzyme Q10 and resveratrol have been shown in studies to reduce gum inflammation and improve markers of oxidative stress.
—
Ximena Araya-Fischel, Forbes.com, 4 July 2025
The reason for the result was that when the cysteine was blocked, there was a corresponding drop in a small molecule called coenzyme A (CoA), which is found in all living things and is responsible for metabolic processes, including metabolizing fatty acids.
—Michael Franco
may 21, New Atlas, 21 May 2025
The larger portion of the mask is formulated with NAD+, a coenzyme that supports collagen production and soothes antioxidative stress, and the lower chin piece puts polylactic acid to work in each little microfiber of the mask to lift, firm, and improve texture and tone evenness.
—Annie Blackman, Allure, 10 Apr. 2025
However, for additional beauty benefits and boosted cellular health, the brand’s unflavored powder also includes vitamin C, hyaluronic acid and nicotinamide riboside, a precursor to longevity coenzyme NAD+.
—Emily Burns, Footwear News, 1 Apr. 2025
See All Example Sentences for coenzyme
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Ximena Araya-Fischel, Forbes.com, 4 July 2025
The reason for the result was that when the cysteine was blocked, there was a corresponding drop in a small molecule called coenzyme A (CoA), which is found in all living things and is responsible for metabolic processes, including metabolizing fatty acids.
—Michael Franco
may 21, New Atlas, 21 May 2025
The larger portion of the mask is formulated with NAD+, a coenzyme that supports collagen production and soothes antioxidative stress, and the lower chin piece puts polylactic acid to work in each little microfiber of the mask to lift, firm, and improve texture and tone evenness.
—Annie Blackman, Allure, 10 Apr. 2025
However, for additional beauty benefits and boosted cellular health, the brand’s unflavored powder also includes vitamin C, hyaluronic acid and nicotinamide riboside, a precursor to longevity coenzyme NAD+.
—Emily Burns, Footwear News, 1 Apr. 2025
See All Example Sentences for coenzyme
Cite this Entry
“Coenzyme.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/coenzyme. Accessed 23 Jul. 2025.
Copy CitationMedical Definition
coenzyme
noun
co·en·zyme
(ˈ)kō-ˈen-ˌzīm
: a thermostable nonprotein compound that forms the active portion of an enzyme system after combination with an apoenzyme compare activator sense 1
Love words? Need even more definitions?
Merriam-Webster unabridged
Share