Coenzyme

noun

noun ·3 syllables ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Any small molecule that is necessary for the functioning of an enzyme.

    "A coenzyme that exists in all living cells, NAD+ plays a central role in the body’s biological processes, such as regulating cellular energy, increasing insulin sensitivity and reversing mitochondrial dysfunction."

  2. 2
    a small molecule (not a protein but sometimes a vitamin) essential for the activity of some enzymes wordnet

Synonyms

All synonyms
enzyme

Example

More examples

"A coenzyme that exists in all living cells, NAD+ plays a central role in the body’s biological processes, such as regulating cellular energy, increasing insulin sensitivity and reversing mitochondrial dysfunction."

Etymology

From co- + enzyme.

Related phrases

coenzyme Acoenzyme Icoenzyme IIcoenzyme Qadenosine triphosphatecitric acid cyclefatty acidpantothenic acid

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.