Scar tissue is made of collagen fibers, just like the rest of your skin. The main difference lies in how these fibers are arranged. Scar tissue has a look and feel that is thicker than the rest of your skin because the collagen is produced as a disorderly mass of fibers.
A pre-order is an order placed for an item which has not yet been released. The idea for pre-orders came when people found it hard to get popular items in stores due to their popularity. Companies then had the idea to allow customers to reserve their own personal copy, before the release, which has been a huge success.
Popular Terms. A customer order that cannot be filled when presented, and for which the customer is prepared to wait for some time. The percentage of items backordered and the number of backorder days are important measures of the quality of a company's customer service and the effectiveness of its inventory management. Use 'backorder' in a Sentence.