Preemption or pre-emption may refer to:
Legal
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FDA preemption, legal theory in the United States that exempts product manufacturers from tort claims regarding Food and Drug Administration approved products
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Federal preemption, displacement of U.S. state law by U.S. Federal law
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Pre-crime
''Pre-crime'' (or ''precrime'') is the idea that the occurrence of a crime can be anticipated before it happens. The term was coined by science fiction author Philip K. Dick, and is increasingly used in academic literature to describe and critici ...
, a criminal justice system approaches to crimes not yet committed
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Pre-emption (Dominion Land Survey)
Preemption or pre-emption may refer to:
Legal
* FDA preemption, legal theory in the United States that exempts product manufacturers from tort claims regarding Food and Drug Administration approved products
* Federal preemption, displacement of ...
, a purchase right given to settlers under the 1872
Dominion Lands Act
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Pre-emption right A pre-emption right, right of pre-emption, or first option to buy is a contractual right to acquire certain property newly coming into existence before it can be offered to any other person or entity. It comes from the Latin verb ''emo, emere, emi, ...
s, the right of existing shareholders in a company to buy shares offered for sale before they are offered to the public
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Preemption (land) Preemption was a term used in the nineteenth century to refer to a settler's right to purchase public land at a federally set minimum price; it was a right of first refusal. Usually this was conferred to male heads of households who developed the p ...
, a type of land transfer in the United States, as in the Preemption Act of 1841
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Preemption Line
The Preemption Line (also spelled Pre-Emption) divided the aboriginal lands of western New York State awarded to New York from those awarded to Commonwealth of Massachusetts by the Treaty of Hartford of 1786. It was defined as the meridian (north ...
, the line that divided the Indian lands of western New York State, that had been awarded to New York, from those that had been awarded to the Commonwealth of Massachusetts by the
Treaty of Hartford of 1786
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State preemption
In United States law, state preemption is the invalidation of some action by, or the wresting of power from, a portion of the state government (more often than not a municipality or other part of the state government that only exercises power withi ...
, displacement of U.S. municipal law by state law
Other
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Preempt, a type of bid and a bidding tactic in contract bridge
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Preemption (computing), the interruption of a computer process without its cooperation in order to perform another task
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Preemption (telecommunications), situation where one communication source is prioritised over another, in case of limited (radio) channel capacity
* "Preemption", a form of broadcasting
blackout (broadcasting)
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Preemptive war or preemptive strike
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Traffic signal preemption
{{Disambiguation