The FindLaw Legal Dictionary -- free access to over 8260 definitions of legal terms. Search for a definition or browse our legal glossaries.
federal preemption n: a doctrine in law that allows a federal law to take precedence over or to displace a state law in certain matters of national importance (as interstate commerce)
Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.