To sort or arrange beforehand.
To order (goods or services) in advance, before they are available.
Such that, recursively, the root is visited before the left and right subtrees.
A binary relation that is reflexive and transitive.
An order for goods or services placed in advance.
To put in order; to sort; to tidy up.
To clarify a situation or concept to (an audience).
To bribe or corrupt.
To stand up, especially from a sitting position.
To cause to become straight.
To become straight.