Preorder Definition

prēôrdər
verb
To order (an item) prior to the official release or sale date, for later delivery.
Webster's New World

To order (goods) in advance, before they are available.

Wiktionary
noun
The act or an instance of preordering.
Webster's New World
A preordered item.
Webster's New World

(set theory) A binary relation that is reflexive and .

The relation of logical implication over sentences is an example of a preorder.
Wiktionary
adjective

(computing theory) Of a tree traversal, recursively visiting the root before the left and right subtrees.

Wiktionary

Other Word Forms of Preorder

Noun

Singular:
preorder
Plural:
preorders

Origin of Preorder

  • pre- +‎ order

    From Wiktionary

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