Preorder - Wikipedia
en.wikipedia.org › wiki › PreorderA set that is equipped with a preorder is called a preordered set (or proset ). For emphasis or contrast to strict preorders, a preorder may also be referred to as a non-strict preorder. If reflexivity is replaced with irreflexivity (while keeping transitivity) then the result is called a strict preorder; explicitly, a strict preorder on
Pre-order - Wikipedia
en.wikipedia.org › wiki › Pre-orderA pre-order is an order placed for an item that has not yet been released. The idea for pre-orders came because people found it hard to get popular items in stores because of their popularity. Companies then had the idea to allow customers to reserve their own personal copy before its release, which has been a huge success.
Pre-order - Wikipedia
https://en.wikipedia.org/wiki/Pre-orderA pre-order is an order placed for an item that has not yet been released. The idea for pre-orders came because people found it hard to get popular items in stores because of their popularity. Companies then had the idea to allow customers to reserve their own personal copy before its release, which has been a huge success. Pre-orders allow consumers to guarantee immediate shipment on release, manufacturers can g…