Adjective

1. cooperating
   • 1850, August Neander, The Life of Jesus Christ in Its Historical Connexion and Historical ..., page 13

     And so our own idea of Christ compels us to admit that two factors, the one natural, the other supernatural, were coefficient in his entrance into human life;

   • 2005, Mathew Callahan, Boff Whalley, The Trouble with Music, page 12

     Nevertheless, there was some substance to the notion that acclaim and merit were coefficient.

Noun

1. A constant by which an algebraic term is multiplied.
2. A number, value or item that serves as a measure of some property or characteristic.