pre-emption

Noun
  1. The judicial principle asserting the supremacy of federal over state legislation on the same subject (synset 105966105)
  2. The right of a government to seize or appropriate something (as property) (synset 105186098)
  3. The right to purchase something in advance of others (synset 105185921)
  4. A prior appropriation of something (synset 100085861)
    "the preemption of bandwidth by commercial interests"

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