“Dad is making dinner. He says it will be ready in an hour. In the meantime, let’s take the dog for a walk.”

“Bob is coming over today, but he won’t get here until 7:00. In the meantime, I’ll start studying for next week’s test.”

“Meantime” is the time before something you’re waiting for. We might feel impatient, but there is nothing we can do to speed it up. So it’s a good idea to make use the time instead of just waiting and stressing out.