preemption

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.

A purchase made by such a right.

Prior seizure of, appropriation of, or claim to something, such as property.

The action of preempting, as the use of military force in a preemptive attack.

The doctrine that federal law takes precedence over state law.

The purchase of something before it is offered for sale to others.

The purchase of public land by the occupant.

The temporary interruption of a task without its cooperation and with the intention of resuming it at a later time.

The displacement of a lower jurisdiction’s laws when they conflict with those of a higher jurisdiction.