Answer:
the demand for a factor of production that is derived from the demand for the good the factor produces.
Explanation:
Derived demand is demand for a factor of production that is derived from the demand for the good the factor produces.
It is when the demand for a good is dependent on the demand for another good.
An example of derived demand is demand for gas to fuel a car. If an individual didn't have a car, he won't buy gas but the person with a car needs gas for his car. So the demand for gas is a derived demand. If the demand for car falls, the demand for gas would also fall.