Dictionary

cofactor

noun co·fac·tor \ˈkō-ˌfak-tər\

Definition of COFACTOR

1
:  the signed minor of an element of a square matrix or of a determinant with the sign positive if the sum of the column number and row number of the element is even and with the sign negative if it is odd
2
:  a substance that acts with another substance to bring about certain effects; especially :  coenzyme
3
:  something (as diet or a virus) that acts with or aids another factor in causing disease
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First Known Use of COFACTOR

1885
Medical Dictionary

cofactor

noun co·fac·tor \ˈkō-ˌfak-tər\

Medical Definition of COFACTOR

1
:  a substance that acts with another substance to bring about certain effects; especially :  coenzyme
2
:  something (as a diet or virus) that acts with or aids another factor in causing disease

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