Redemption is a period after your home has already been sold at a foreclosure sale when you can still reclaim your home. You will need to pay the outstanding mortgage balance and all costs incurred during the foreclosure process.
Many states have some type of redemption period. The redemption period and availability is often determined by whether the foreclosure is judicial or non-judicial. And, timelines and procedures can vary greatly from state to state. You can find specific information about the redemption period of your state (if applicable) by reading the state laws on foreclosure.