Marriage for money is the modern form or derivative of marriage by purchase.
The use of a Greek derivative gives notice that you are scientific.
Thus the tetracetate is a derivative to be reckoned with in the problem.
And this is equivalent to admitting the doctrine of "derivative creation."
The English language has no derivative noun from "mores," and no equivalent for it.
Like its derivative Warden it had a very wide range of meanings.
In the cow with the crumpled horn we have a derivative of Mid.
Bayard, a derivative of bay, was the name of several famous war-horses.
I belong to the party which claims life as a derivative of life.
One must believe also in the derivative principles following from them.