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Word of the Day Wednesday, June 10, 2026

cofactor

/kəʊˈfæktər/ noun · British & US
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What does cofactor mean?

noun

A substance that is necessary for an enzyme to function, or a number used in conjunction with a determinant in linear algebra to solve a system of equations.

Example

"The cofactor of the enzyme was essential for its catalytic activity."

Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.

Etymologically related

Synonyms for cofactor

Antonyms of cofactor

Rhymes with cofactor