1. (noun) the judicial principle asserting the supremacy of federal over state legislation on the same subject

• pre-emption

2. (noun) the right of a government to seize or appropriate something (as property)

• pre-emption

3. (noun) the right to purchase something in advance of others

• pre-emption

4. (noun) a prior appropriation of something

• pre-emption

1. (noun) the judicial principle asserting the supremacy of federal over state legislation on the same subject

• judicial doctrine
• judicial principle
• legal principle

2. (noun) the right of a government to seize or appropriate something (as property)

• legal right

3. (noun) the right to purchase something in advance of others

• right

4. (noun) a prior appropriation of something

• appropriation

1. (noun) the judicial principle asserting the supremacy of federal over state legislation on the same subject

• jurisprudence
• law

1. (noun) the right to purchase something in advance of others

• preemptive right
• subscription right

1. (noun) the right to purchase something in advance of others

• preempt

2. (noun) a prior appropriation of something

• preempt