what is the meaning of backorder refers to a situation where a product is temporarily out of stock but is expected to be available for delivery at a later date. When an item is on backorder, customers can still place orders, but the shipping will be delayed until the product is restocked. This is common in eCommerce businesses and is often communicated clearly to customers so they know when to expect delivery. Backorder situations can occur for a variety of reasons, such as high demand or supply chain disruptions.