preemption

play
noun pre·emp·tion \-ˈem(p)-shən\

Definition of preemption

  1. 1a :  the right of purchasing before others; especially :  one given by the government to the actual settler upon a tract of public landb :  the purchase of something under this right

  2. 2 :  a prior seizure or appropriation :  a taking possession before others

  3. 3 :  a doctrine in law according to which federal law supersedes state law when federal law is in conflict with a state law

  4. 4 :  a policy of launching a preemptive attack in order to prevent a suspected imminent attack

Examples of preemption in a Sentence

  1. longtime residents resented the preemption of their urban neighborhood by this influx of affluent yuppies

Recent Examples of preemption from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'preemption'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of preemption

Medieval Latin praeemption-, praeemptio previous purchase, from praeemere to buy before, from Latin prae- pre- + emere to buy — more at redeem


Law Dictionary

preemption

play
noun pre·emp·tion \prē-ˈemp-shən\

Legal Definition of preemption

  1. 1a :  the right of purchasing before others :  preemptive right b :  a right to purchase a tract of public land before others that was given by the government to the actual occupant of the land Editor's note: This sense of preemption is primarily of historical importance.

  2. 2 :  a doctrine in conflicts of law: when a superior government (as of a state) has undertaken to regulate a subject its laws supersede those of an inferior government (as of a municipality) Editor's note: According to the doctrine of preemption, federal law supersedes state law when federal law is in conflict with a state law on a subject or when there is congressional intent to regulate a subject to the exclusion of the states. Federal preemption is based on the supremacy clause of the U.S. Constitution and is closely related to the powers granted Congress in the commerce clause.

  3. 3 :  an act or instance of preempting

Origin and Etymology of preemption

Medieval Latin praeemption- praeemptio previous purchase, from praeemere to buy before



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