pre-emption
[pri'empʃn]
- n. 优先购买权；收买权
英英释意
- 1. the judicial principle asserting the supremacy of federal over state legislation on the same subject
- 2. the right of a government to seize or appropriate something (as property)
- 3. the right to purchase something in advance of others
- 4. a prior appropriation of something;
- "the preemption of bandwidth by commercial interests"