WordRel.com

• a prior appropriation of something

  synonym	pre-emption
  derivation	preempt
  hypernym	appropriation

• the right to purchase something in advance of others

  synonym	pre-emption
  derivation	preempt
  hypernym	right
  hyponym	preemptive rightsubscription right

• the right of a government to seize or appropriate something (as property)

  synonym	pre-emption
  hypernym	legal right

• the judicial principle asserting the supremacy of federal over state legislation on the same subject

  synonym	pre-emption
  domain topic	jurisprudencelaw
  hypernym	judicial doctrinejudicial principlelegal principle