What does VACATED mean in regards to a civil court case?

I see a civil court case that has VACATED in the Disposition column. What does that mean?What does VACATED mean in regards to a civil court case?
It means that the issue was dropped before a decision was made for either the plaintiff or the defendant. What does VACATED mean in regards to a civil court case?
to render inoperative; deprive of validity; void; annul: to vacate a legal judgment.