to order (an item) prior to the official release or sale date, for later delivery
- the act or an instance of preordering
- a preordered item
(third-person singular simple present preorders, present participle preordering, simple past and past participle preordered)
- (set theory) A binary relation that is reflexive and .
- The relation of logical implication over sentences is an example of a preorder.
- preordered set
pre- + order