expiration expiration /ˌɛkspɝˈeɪʃən/

noun

1. () A coming to an end of a contract period  ( expiry , expiration , termination )
   a coming to an end of a contract period
    The expiry of his driver's license
   the expiry of his driver's license
   
2. The act of expelling air from the lungs  ( breathing out , exhalation , expiration )
   the act of expelling air from the lungs
   
3. Euphemistic expressions for death  ( departure , exit , expiration , going , loss , passing , release )
   euphemistic expressions for death
    Thousands mourned his passing
   thousands mourned his passing