- 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
- preemption, pre-emption - the right of a government to seize or appropriate something (as property)
--2 is a kind of legal right
- preemption, pre-emption - the right to purchase something in advance of others
--3 is a kind of right
--3 has particulars: preemptive right; subscription rightDerived form: verb preempt1 - 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