cofactor noun. ['kǝʊfaktǝ] L19.
[from CO- + FACTOR noun.]
1. Math. A coefficient; spec. the quantity obtained from a determinant or square matrix by removal of the row and column containing a given element. L19.

2. Biochemistry. Any substance (other than the substrate) whose presence is essential for the activity of an enzyme. M20.

[TahlilGaran] English Dictionary ▲