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preemption

 
Noun preemption has 4 senses
  1. preemption, pre-emption - the judicial principle asserting the supremacy of federal over state legislation on the same subject
    --1 is a kind of legal principle, judicial principle, judicial doctrine
  2. preemption, pre-emption - the right of a government to seize or appropriate something (as property)
    --2 is a kind of legal right
  3. preemption, pre-emption - the right to purchase something in advance of others
    --3 is a kind of right
    --3 has particulars: preemptive right; subscription right
    Derived form: verb preempt1
  4. preemption, pre-emption - a prior appropriation of something; "the preemption of bandwidth by commercial interests"
    --4 is a kind of appropriation
    Derived form: verb preempt1
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