COFACTOR
cofactor
(noun) a substance (as a coenzyme) that must join with another to produce a given result
Source: WordNet® 3.1
Etymology
Noun
cofactor (plural cofactors)
A contributing factor.
(biochemistry) A substance, especially a coenzyme or a metal, that must be present for an enzyme to function.
(biochemistry) A molecule that binds to and regulates the activity of a protein.
(mathematics) The result of a number being divided by one of its factors.
(mathematics, linear algebra, of a matrix) The signed determinant of the submatrix produced by removing the row and column containing a specified element; primarily used in the recursive definition and calculation of the determinant of a matrix.
Synonyms
• (determinant of a submatrix): minor (unsigned)
Source: Wiktionary