Preemption Definition and Legal Meaning

On this page, you'll find the legal definition and meaning of Preemption, written in plain English, along with examples of how it is used.

What is Preemption?

In United States, Federal law is the supreme law with highest authority. When there is a conflict between the Federal law and state law, the Federal law is said to preempt – win over – state law thereby displacing the effect of the state law. That’s known as premption..