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

coenzymatic

(ˌ)kō-ˌen-zə-ˈma-tik 

-(ˌ)zī-

adjective

coenzymatically

(ˌ)kō-ˌen-zə-ˈma-ti-k(ə-)lē 

-(ˌ)zī-

adverb

Examples of coenzyme in a Sentence

Recent Examples on the Web

The latter is a form of wellness therapy used to replenish Nicotinamide Adenine Dinucleotide (NAD+), a critical coenzyme found in every cell of your body. —Essence, 13 Jan. 2026

The formula includes coenzyme Q10 and vitamin C, which help reduce the look of wrinkles and crepey skin. —Madison Barber, InStyle, 30 Dec. 2025

Radishes also provide coenzyme Q10, anthocyanins, and phenolic acids, which have cell-protecting properties.9 4. —Jillian Kubala, Health, 23 Oct. 2025

There is evidence that this coenzyme can improve mitochondrial function within cells and also act as an anti- inflammatory. —Dr. Sanjay Gupta, CNN Money, 26 Aug. 2025

Word History

First Known Use

1947, in the meaning defined above

Phrases Containing coenzyme

• acetyl coenzyme A
• coenzyme A
• coenzyme Q

Rhymes for coenzyme

• isoenzyme

Medical 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

coenzymatic

(ˌ)kō-ˌen-zə-ˈmat-ik, -(ˌ)zī- 

adjective

coenzymatically

-i-k(ə-)lē 

adverb