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a. The right to purchase something before others, especially the right to purchase public land that is granted to one who has settled on that land.
b. A purchase made by such a right.
2. Prior seizure of, appropriation of, or claim to something, such as property.
3. The action of preempting, as the use of military force in a preemptive attack.
4. Law The doctrine that federal law takes precedence over state law.

[pre- + Latin ēmptiō, ēmptiōn-, buying (from ēmptus, past participle of emere, to buy; see em- in Indo-European roots).]


or pre-emp•tion

(priˈɛmp ʃən)

1. the act or right of claiming or purchasing before or in preference to others.
2. the act of preempting.
[1595–1605; < Medieval Latin praeemptiō previous purchase, derivative (with Latin -tiō -tion) of praeemere to buy beforehand]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.preemption - the judicial principle asserting the supremacy of federal over state legislation on the same subject
judicial doctrine, judicial principle, legal principle - (law) a principle underlying the formulation of jurisprudence
law, jurisprudence - the collection of rules imposed by authority; "civilization presupposes respect for the law"; "the great problem for jurisprudence to allow freedom while enforcing order"
2.preemption - the right of a government to seize or appropriate something (as property)
legal right - a right based in law
3.preemption - the right to purchase something in advance of others
right - an abstract idea of that which is due to a person or governmental body by law or tradition or nature; "they are endowed by their Creator with certain unalienable Rights"; "Certain rights can never be granted to the government but must be kept in the hands of the people"- Eleanor Roosevelt; "a right is not something that somebody gives you; it is something that nobody can take away"
preemptive right - the right granting to shareholders the first opportunity to buy a new issue of stock; provides protection against dilution of the shareholder's ownership interest
subscription right - the right of a shareholder in a company to subscribe to shares of a new issue of common stock before it is offered to the public
4.preemption - a prior appropriation of something; "the preemption of bandwidth by commercial interests"
appropriation - a deliberate act of acquisition of something, often without the permission of the owner; "the necessary funds were obtained by the government's appropriation of the company's operating unit"; "a person's appropriation of property belonging to another is dishonest"


or pre-emption
The act of taking something for oneself:
References in periodicals archive ?
FirstNet, the nationwide public safety broadband network, now features ruthless preemption services for first responder subscribers across the country.
FirstNet, the nationwide public safety broadband network, now features ruthless preemption (preemption) services for first responder subscribers across the country.
Sometimes Congress addresses preemption in the laws that empower federal agencies to regulate business practices.
The justices talked often about limits on preemption last week, when they heard oral arguments on Coventry Health Care of Missouri v.
The Court reversed the FCC's preemption order, holding that Section 706 of the Telecommunications Act of 1996 ("the Act") did not contain the requisite clear statement of congressional intent to delegate preemption authority to the agency.
Historically, the concept of preemption was paramount to patent eligibility.
Massumi's protagonist is the idea of preemption as strategy, and he describes in his book the underlying assumptions on which preemption becomes the only response available to threats.
M2 EQUITYBITES-September 12, 2016-Total Exercises Preemption Rights; Will Acquire Barnett Shale Assets from Chesapeake
Le ministere de l'Industrie et des Mines a reaffirme, hier, que le droit de preemption est maintenu et renforce dans la nouvelle loi relative a la promotion de l'investissement.
org/model-policy/living-wage-mandate-preemption-act/) the Living Wage Mandate Preemption Act, which ALEC first offered to the world in 2002.
Unlike the right of retention that deprived the owner (or vendor) of his or her property at customs before export, the right of preemption affects the interests of the buyer at auction.
During the first quarter of 2015, state preemption bills prohibiting local governments from enacting pit bull ordinances were brought in five states: Arizona, Georgia, Kentucky, Montana and Washington.