I'm trying to watch NBC rewind but today's episode says it is pre-emptied?

Question

What does that mean?

Answer 1

If this is regarding Days of Our Lives and/or Passions, it is because they have been pre-empted on July 5th and 6th, so they weren't on the air those days due to Wimbledon coverage. So there is probably nothing to show for a rewind.

That is just a shot in the dark as to what you were asking.

Answer 2

Preempted means something else was showed instead even though that show was scheduled. A lot of times sports will run long and preempt the shows that were to come on after it, or a Presidential speech, things of that nature.