"password ageing"

Definition: password ageing: In a computer network, a feature of the network operating system (NOS) that keeps track of the last time you changed your password You should change your password frequently to help thwart computer crackers. When your password reaches the end of its "life" such as after six months, a message appears on-screen that encourages you to change your password. From QUECID

* Linux/Unix/Computing Glossary