Definitions for "Postcondition"
an assertion that must hold following the successful execution of the associated function (e.g., use case path, class method). See also invariant and precondition.
A postcondition is something which is true or expected to be true upon completion of a program or fragment thereof. The most common postconditions are halting and the returning of correct values.
a statement that will be true when the function returns (assuming the preconditions were true when it was called)
The state that the software is left in after the use case is completed. In the use case, each of these states can be described in words (“the word processor is loaded but no document is being editedâ€), although it is also possible to create a name for each state and refer to it by name.
a condition that the server guarantees when the method completes