The act of rescinding, abrogating, annulling, or vacating; as, the rescission of a law, decree, or judgment.

The noun forms for the verb to rescind are rescinder, rescindment, and the one you may actually use, the gerund rescinding.

The court that issued the order would need to issue another order rescinding the original order.

There are not any currently. You can adopt a stepchild of any age as long as the parental rights are no longer there.

there are many synonyms for repeal, abolition, abrogation, annulment, invalidation, nullification, rescinding, rescindment, rescission, revocation, withdrawal. I hope this helps!!