(set theory, order theory) A total order of some set such that every nonempty subset contains a least element.

(set theory, order theory, transitive) To impose a well-order on (a set).

plural of order of magnitude

(management) An authorization to expend resources to perform a task.

(US, military) A order initiating a military operation.

plural of execute order

(computing theory) Alternative spelling of postorder

Alternative form of preorder

Alternative form of preorder

Alternative form of preorder